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Search results for problems posted by Danish Ahmed Khan :
Difficulty: 3 of 5Divisibility in a sequence (in Numbers)
Posted on 2017-08-12 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Palindromic sum (in Just Math)
Posted on 2017-08-08 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 2 of 5Nondivisibility by 11 (in Just Math) Rating: 4.00
Posted on 2017-08-06 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 2 of 5Same Real Roots (in Just Math)
Posted on 2016-12-10 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 4 of 5Vieta's derivatives (in Just Math)
Posted on 2016-12-02 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 2 of 5composite function (in Calculus) Rating: 3.00
Posted on 2016-11-29 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 4 of 5Equal Areas on Circles (in Geometry)
Posted on 2016-11-19 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 1 of 5Don't be confused (in General)
Posted on 2016-11-14 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Difficulty: 3 of 5Roots Ready to Relate (in Just Math) Rating: 4.00
Posted on 2016-11-06 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Matrix Mathematics (in Just Math)
Posted on 2016-10-30 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5A little twist (in Just Math)
Posted on 2016-10-21 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Difficulty: 3 of 5get the real part of the problem (in Just Math)
Posted on 2016-10-16 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 4 of 5this is the range of my root (in Just Math)
Posted on 2016-10-14 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 4 of 5polynomial problem 3 (in Just Math)
Posted on 2016-10-08 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 2 of 5polynomial problem 2 (in Just Math) Rating: 3.00
Posted on 2016-09-30 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Polynomial problem (in Just Math)
Posted on 2015-03-22 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Pentagon Fraction Minimizing (in Just Math)
Posted on 2015-03-16 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Triangle to Triangle (in General)
Posted on 2015-03-07 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 2 of 5Minimizing Perimeter (in Shapes)
Posted on 2015-03-04 by Danish Ahmed Khan (No Solution Yet, 15 Comments)
Difficulty: 2 of 5Equilateral fun (in Geometry)
Posted on 2015-02-28 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 2 of 5Prime and perfect (in Numbers)
Posted on 2015-02-27 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 2 of 5Repeated Words (in Word Problems)
Posted on 2015-02-19 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Difficulty: 2 of 5Inequality (in Just Math)
Posted on 2015-02-11 by Danish Ahmed Khan (No Solution Yet, 5 Comments)
Difficulty: 3 of 5The LSD of Prime Numbers (in Numbers)
Posted on 2015-02-08 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Very very colourful (in General)
Posted on 2015-02-06 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Palindromes from Digit Sum Series (in Numbers)
Posted on 2015-02-03 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Happy Numbers (in Numbers)
Posted on 2015-02-02 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Ellis Number (in Numbers)
Posted on 2015-01-31 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 2 of 5Integer Triplets with a Difference (in Numbers)
Posted on 2015-01-30 by Danish Ahmed Khan (No Solution Yet, 6 Comments)
Difficulty: 3 of 5A Self-Terminating Sequence (in Numbers)
Posted on 2015-01-29 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 2 of 5ProSum Numbers (in Numbers)
Posted on 2015-01-28 by Danish Ahmed Khan (No Solution Yet, 5 Comments)
Difficulty: 3 of 5Integral Proof (in Numbers)
Posted on 2015-01-26 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 3 of 5Trigo - 24 (in Just Math)
Posted on 2015-01-25 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Final Minus Two (in Just Math)
Posted on 2015-01-24 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 2 of 5Easy as One, Two, Three (in Numbers)
Posted on 2015-01-20 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Trigo inequality (in Just Math)
Posted on 2014-12-11 by Danish Ahmed Khan (No Solution Yet, 11 Comments)
Difficulty: 1 of 5World War I sword (in Riddles)
Posted on 2014-09-02 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5A PowerSum Puzzle (in Numbers)
Posted on 2014-08-27 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 1 of 5A world cup problem (in Probability) Rating: 1.50
Posted on 2014-08-26 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Difficulty: 3 of 5 Trigonometric progression (in Just Math)
Posted on 2014-08-24 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5The Real Cyclic Quad (in Geometry) Rating: 1.50
Posted on 2014-08-23 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Six tangents (in Just Math)
Posted on 2014-08-17 by Danish Ahmed Khan (No Solution Yet, 8 Comments)
Difficulty: 3 of 5Minimizing Trigo value (in Numbers) Rating: 4.00
Posted on 2014-03-02 by Danish Ahmed Khan (No Solution Yet, 7 Comments)
Difficulty: 2 of 5Special polygon (in Shapes)
Posted on 2014-02-27 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5sum Up (in Numbers)
Posted on 2014-02-26 by Danish Ahmed Khan (No Solution Yet, 5 Comments)
Difficulty: 2 of 5All Odds (in Numbers)
Posted on 2014-02-24 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Penta-Quadratic (in Just Math) Rating: 4.00
Posted on 2014-02-23 by Danish Ahmed Khan (No Solution Yet, 5 Comments)
Difficulty: 3 of 5Overlapping Triangles (in Geometry)
Posted on 2014-02-22 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5The Equiangular Hexagon (in Geometry)
Posted on 2014-02-17 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Red Area (in Shapes)
Posted on 2014-02-16 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Equal areas (in Geometry)
Posted on 2014-02-15 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Remove last three to get cube root (in Numbers)
Posted on 2014-02-11 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 3 of 5Cards In A Circle (in General)
Posted on 2014-02-09 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 2 of 5Bisection In a triangle (in Geometry)
Posted on 2014-02-01 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 2 of 5Deduction Problem (in Numbers)
Posted on 2014-01-31 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 2 of 5A Tetrahedron (in General) Rating: 3.00
Posted on 2014-01-30 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Difficulty: 3 of 5Passing On A Track (in Just Math) Rating: 3.00
Posted on 2014-01-29 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 3 of 5Lets Concatenate (in Just Math)
Posted on 2014-01-28 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 4 of 53 INCIRCLES (in Geometry) Rating: 3.00
Posted on 2014-01-25 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Incircles in equilateral triangles (in Geometry)
Posted on 2014-01-18 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Pentagon in a semicircle (in Geometry)
Posted on 2014-01-11 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 2 of 5120 Breeds 90 (in Geometry) Rating: 3.00
Posted on 2014-01-04 by Danish Ahmed Khan (No Solution Yet, 0 Comments)
Difficulty: 2 of 5Simple trigo (in Geometry)
Posted on 2014-01-03 by Danish Ahmed Khan (No Solution Yet, 6 Comments)
Difficulty: 2 of 5all squares (in Geometry)
Posted on 2014-01-01 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 2 of 5Trigonometric product (in Numbers)
Posted on 2013-12-29 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Difficulty: 2 of 5Algebra and Primes (in Numbers) Rating: 4.00
Posted on 2013-12-25 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 1 of 5Hidden Animals (in General)
Posted on 2013-12-24 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 2 of 5Fight (in Logic) Rating: 3.00
Posted on 2013-12-20 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5All 1's (in Numbers)
Posted on 2013-12-14 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 2 of 5Two Rectangles (in Geometry) Rating: 3.00
Posted on 2013-12-09 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 51998 (in Numbers)
Posted on 2013-12-05 by Danish Ahmed Khan (No Solution Yet, 5 Comments)
Difficulty: 2 of 5APPLE + LEMON = BANANA (in Numbers)
Posted on 2013-12-04 by Danish Ahmed Khan (No Solution Yet, 5 Comments)
Difficulty: 3 of 5Square in a Pentagon (in Geometry) Rating: 3.00
Posted on 2013-12-01 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Difficulty: 3 of 5Continued Multiples (in Numbers) Rating: 5.00
Posted on 2013-11-29 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 4 of 5Pentagon in a Square (in Geometry)
Posted on 2013-11-28 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 2 of 5Equal sums on a circle (in General)
Posted on 2013-11-26 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 2 of 5Safe chess piece (in Games) Rating: 3.33
Posted on 2013-11-21 by Danish Ahmed Khan (No Solution Yet, 9 Comments)
Difficulty: 2 of 5Testing Three Students (in Just Math)
Posted on 2013-11-20 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5A Square, a Rectangle and a Triangle (in Geometry) Rating: 3.00
Posted on 2013-11-17 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 2 of 5Four Egyptian Fractions (in Numbers)
Posted on 2013-11-13 by Danish Ahmed Khan (No Solution Yet, 6 Comments)
Difficulty: 3 of 5Consecutive Additions (in Numbers) Rating: 3.00
Posted on 2013-11-12 by Danish Ahmed Khan (No Solution Yet, 6 Comments)
Difficulty: 3 of 5Hexagon in a square (in Shapes)
Posted on 2013-11-10 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 2 of 5Four Digits (in Numbers) Rating: 4.00
Posted on 2013-11-05 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Difficulty: 2 of 5Triangles And Rectangles Pair (in Geometry)
Posted on 2013-11-01 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 1 of 5Fill In The Blanks (in Numbers)
Posted on 2013-10-30 by Danish Ahmed Khan (No Solution Yet, 5 Comments)
Difficulty: 3 of 5Slow Cows (in General) Rating: 3.50
Posted on 2013-10-28 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Difficulty: 2 of 5Sum of Cubes (in Numbers)
Posted on 2013-10-23 by Danish Ahmed Khan (No Solution Yet, 5 Comments)
Difficulty: 2 of 5Five by Five (in Numbers)
Posted on 2013-10-21 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 2 of 5DoDeCaGon (in Shapes)
Posted on 2013-10-18 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Difficulty: 1 of 5Trigo computation (in Numbers)
Posted on 2013-10-11 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 2 of 5Quintic Expression (in Just Math) Rating: 4.00
Posted on 2013-10-09 by Danish Ahmed Khan (No Solution Yet, 8 Comments)
Difficulty: 3 of 5Powering (in Just Math)
Posted on 2013-10-05 by Danish Ahmed Khan (No Solution Yet, 5 Comments)
Difficulty: 2 of 5Non existing altitudes (in Geometry)
Posted on 2013-10-03 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Difficulty: 3 of 5Rhomboctagon (in Geometry)
Posted on 2013-09-28 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 2 of 5mistakes (in Numbers)
Posted on 2013-09-27 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 2 of 5Smallinomial (in Just Math)
Posted on 2013-09-25 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 1 of 5Three Semi-Circles (in Geometry)
Posted on 2013-09-22 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 2 of 5Mysterious Sequence (in Sequences) Rating: 5.00
Posted on 2013-09-11 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 1 of 5play with digit (in Numbers)
Posted on 2013-09-10 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5The Great (in Just Math)
Posted on 2013-09-06 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 1 of 5The 1234 Problem (in Numbers)
Posted on 2013-09-05 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 2 of 5The Last Two Digits (in Just Math) Rating: 4.00
Posted on 2013-09-04 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 3 of 5The Broken Cash Register (in Just Math)
Posted on 2013-08-30 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Wild and Wooley Numbers (in Numbers)
Posted on 2013-08-28 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 2 of 5The 1979 Series (in Sequences)
Posted on 2013-08-27 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5The cunning Condition (in Just Math)
Posted on 2013-08-25 by Danish Ahmed Khan (No Solution Yet, 5 Comments)
Difficulty: 2 of 5Related Series (in Sequences)
Posted on 2013-08-23 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Dodecagonal Diagonals (in Shapes)
Posted on 2013-08-22 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Tread Ware (in General) Rating: 2.50
Posted on 2013-08-20 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Difficulty: 2 of 5Random Queens (in Probability)
Posted on 2013-08-16 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5NegaBinary Numbers (in Algorithms)
Posted on 2013-08-14 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Morley's Ghost (in Geometry) Rating: 3.50
Posted on 2013-08-10 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 2 of 5An Elusive Quadratic (in Numbers)
Posted on 2013-08-09 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5A Funny Function (in Calculus) Rating: 4.00
Posted on 2013-08-01 by Danish Ahmed Khan (No Solution Yet, 7 Comments)
Difficulty: 3 of 5Squarely Sorted (in Numbers)
Posted on 2013-07-27 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Difficulty: 3 of 5A Pleasurable Puzzle (in Just Math)
Posted on 2013-07-26 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 4 of 5Casting Out Zeros (in Just Math)
Posted on 2013-07-25 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Difficulty: 2 of 5Weighted Quadrilateral (in Geometry) Rating: 3.00
Posted on 2013-07-25 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Prince Rupert's Tetrahedron (in Shapes)
Posted on 2013-07-21 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 4 of 57 boolean Questions (in Logic)
Posted on 2013-07-19 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Penny Parity (in General) Rating: 3.00
Posted on 2013-07-18 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Difficulty: 2 of 5Framing (in Geometry) Rating: 4.00
Posted on 2013-07-16 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 3 of 5Upside Down LCD Display (in Numbers)
Posted on 2013-07-15 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Every Die Face (in Probability)
Posted on 2013-07-12 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Factorials AND Powers (in Numbers)
Posted on 2013-07-11 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 1 of 5Simple Thinking (in Numbers)
Posted on 2013-07-09 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 1 of 5The Seventh Power (in Numbers)
Posted on 2013-07-08 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Pascal Triangle (in Numbers)
Posted on 2013-07-06 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Mystery Matrix (in Sequences)
Posted on 2013-07-04 by Danish Ahmed Khan (No Solution Yet, 6 Comments)
Difficulty: 1 of 5222 (in Word Problems) Rating: 2.00
Posted on 2013-07-02 by Danish Ahmed Khan (No Solution Yet, 11 Comments)
Difficulty: 2 of 5Digital Factorial (in Numbers)
Posted on 2013-07-01 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 2 of 5Rationalism (in Numbers)
Posted on 2013-06-30 by Danish Ahmed Khan (No Solution Yet, 0 Comments)
Difficulty: 3 of 5What's the ... (in Just Math)
Posted on 2013-06-27 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Easy Findings (in Numbers)
Posted on 2013-06-26 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 2 of 5Infinite Product (in Numbers)
Posted on 2013-06-24 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 3 of 5PRIMY inequality (in Just Math)
Posted on 2013-06-22 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Shiny Numbers (in Just Math)
Posted on 2013-06-20 by Danish Ahmed Khan (No Solution Yet, 6 Comments)
Difficulty: 3 of 5Sliding Coin puzzle (in General) Rating: 3.50
Posted on 2013-06-19 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 3 of 5A Black and White Issue (in Just Math) Rating: 1.00
Posted on 2013-06-18 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 4 of 5Introductions all around (in General) Rating: 3.00
Posted on 2013-06-14 by Danish Ahmed Khan (No Solution Yet, 8 Comments)
Difficulty: 2 of 5Jumbo Digits (in Just Math)
Posted on 2013-06-14 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 2 of 5Mouse eating Cheese (in Logic)
Posted on 2013-06-12 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 4 of 5Lion and Tamer (in Logic) Rating: 4.00
Posted on 2013-06-10 by Danish Ahmed Khan (No Solution Yet, 7 Comments)
Difficulty: 3 of 5Chess game reconstruction (in Games)
Posted on 2013-06-08 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Mean Distance Two Points (in Shapes)
Posted on 2013-06-01 by Danish Ahmed Khan (No Solution Yet, 8 Comments)
Difficulty: 2 of 5Strings of Nines (in Numbers)
Posted on 2013-05-29 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 4 of 5UVWXYZ (in Just Math)
Posted on 2013-05-27 by Danish Ahmed Khan (No Solution Yet, 12 Comments)
Difficulty: 4 of 5Crossed Cylinders (in Shapes) Rating: 4.00
Posted on 2013-05-25 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 2 of 5Simple expression but difficult answer (in Just Math)
Posted on 2013-05-21 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 2 of 5Squares and Cubes II (in Numbers) Rating: 3.00
Posted on 2013-05-17 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Divisibility of 29 (in Numbers) Rating: 4.00
Posted on 2013-05-15 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Difficulty: 2 of 5Diophantine Equation (in Just Math)
Posted on 2013-05-14 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 4 of 5Positive Integer, Odd Digits, Divisibility (in Just Math) Rating: 3.67
Posted on 2013-05-12 by Danish Ahmed Khan (No Solution Yet, 5 Comments)
Difficulty: 3 of 5Lovely Fibonacci (in Just Math)
Posted on 2013-05-11 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Time for some Prime (in Just Math)
Posted on 2013-05-05 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Dark Divisibility (in Just Math) Rating: 5.00
Posted on 2013-04-27 by Danish Ahmed Khan (No Solution Yet, 18 Comments)
Difficulty: 3 of 5The Seven Primes (in Just Math)
Posted on 2013-04-26 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 2 of 5Equaliteral Triangle Division (in Shapes)
Posted on 2013-04-25 by Danish Ahmed Khan (No Solution Yet, 5 Comments)
Difficulty: 3 of 52012 sum Digit (in Just Math)
Posted on 2013-04-23 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Difficulty: 3 of 5Incredibly difficult sequence (in Sequences)
Posted on 2013-04-21 by Danish Ahmed Khan (No Solution Yet, 0 Comments)
Difficulty: 3 of 5Elegantly Greedy Pirates (in Just Math) Rating: 3.00
Posted on 2013-04-20 by Danish Ahmed Khan (No Solution Yet, 5 Comments)
Difficulty: 2 of 5Population of Funkytown (in Logic)
Posted on 2013-04-10 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Difficulty: 1 of 5Square division II (in Shapes) Rating: 1.00
Posted on 2013-04-08 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 2 of 5Area of hexagon... (in Geometry)
Posted on 2013-04-06 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 1 of 5Finding Average (in Logic) Rating: 1.50
Posted on 2013-04-01 by Danish Ahmed Khan (No Solution Yet, 9 Comments)
Difficulty: 3 of 5Dangerous Expression for Rationals (in Numbers)
Posted on 2013-03-31 by Danish Ahmed Khan (No Solution Yet, 5 Comments)
Difficulty: 3 of 5Four Coin Theorem (in Shapes)
Posted on 2013-03-17 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Strange Equation (in Just Math)
Posted on 2013-03-11 by Danish Ahmed Khan (No Solution Yet, 10 Comments)
Difficulty: 3 of 5Cyclic QUAD (in Shapes)
Posted on 2013-03-10 by Danish Ahmed Khan (No Solution Yet, 0 Comments)
Difficulty: 3 of 5Product in a Circle (in Shapes)
Posted on 2013-03-09 by Danish Ahmed Khan (No Solution Yet, 0 Comments)
Difficulty: 3 of 5Summing Ones (in Numbers)
Posted on 2013-02-27 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Difficulty: 2 of 5Magical Magician (in Numbers) Rating: 3.50
Posted on 2013-02-23 by Danish Ahmed Khan (No Solution Yet, 6 Comments)
Difficulty: 3 of 5Perfect squares (in Numbers) Rating: 4.00
Posted on 2013-02-21 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 2 of 5Purely prime (in Just Math) Rating: 5.00
Posted on 2013-02-19 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 3 of 5Primed to Square (in Just Math) Rating: 4.00
Posted on 2013-02-15 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 2 of 5Divisibility rule (in Just Math)
Posted on 2013-02-13 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Finding numbers (in Numbers)
Posted on 2013-02-12 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Egyptian Number (in Just Math) Rating: 2.33
Posted on 2013-02-09 by Danish Ahmed Khan (No Solution Yet, 5 Comments)
Difficulty: 3 of 5Rocking digits (in Numbers)
Posted on 2013-02-08 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 3 of 5Midpoint problem (in Geometry) Rating: 3.00
Posted on 2013-02-03 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5The 73rd digit (in Numbers)
Posted on 2013-01-29 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 3 of 5Sum of real Roots (in Just Math)
Posted on 2013-01-27 by Danish Ahmed Khan (No Solution Yet, 6 Comments)
Difficulty: 3 of 5Cute Divisibility (in Numbers)
Posted on 2013-01-26 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Some basic Maths (in Just Math)
Posted on 2013-01-19 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 2 of 5Last three digits (in Just Math) Rating: 2.00
Posted on 2013-01-16 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 3 of 5Rhombus problem, with tangents and parallel (in Geometry) Rating: 3.00
Posted on 2013-01-13 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 4 of 5Thirteenth power (in Just Math)
Posted on 2013-01-12 by Danish Ahmed Khan (No Solution Yet, 7 Comments)
Difficulty: 3 of 5Fifth powers (in Just Math)
Posted on 2013-01-06 by Danish Ahmed Khan (No Solution Yet, 8 Comments)
Difficulty: 3 of 5Divisibility of factorials II (in Numbers)
Posted on 2013-01-01 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Divisibility of factorials (in Numbers)
Posted on 2012-12-29 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 4 of 5Modular mathematics (in Just Math) Rating: 4.00
Posted on 2012-12-28 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Difficulty: 3 of 5Area of semicircle (in Shapes)
Posted on 2012-12-27 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 3 of 5Perpendicular (in Geometry) Rating: 3.33
Posted on 2012-12-26 by Danish Ahmed Khan (No Solution Yet, 5 Comments)
Difficulty: 1 of 5n+1,n+11,n+111 (in Just Math) Rating: 2.25
Posted on 2012-12-24 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Not a Prime (in Just Math) Rating: 3.00
Posted on 2012-12-20 by Danish Ahmed Khan (No Solution Yet, 6 Comments)
Difficulty: 2 of 5Transfer of initial digit (in Numbers)
Posted on 2012-12-20 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 2 of 5A little Generalization (in Numbers)
Posted on 2012-12-18 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Inequality in sums of digits (in Just Math)
Posted on 2012-12-17 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Ones and Nines (in Just Math)
Posted on 2012-12-13 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Possibilities of a (in Just Math) Rating: 3.00
Posted on 2012-12-07 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 2 of 5GCD of Fibonacci (in Numbers)
Posted on 2012-12-06 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Products of digits. (in Just Math)
Posted on 2012-12-05 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Find the triplets (in Just Math)
Posted on 2012-12-04 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 2 of 5Divisible by 3. (in Just Math) Rating: 3.00
Posted on 2012-12-02 by Danish Ahmed Khan (No Solution Yet, 5 Comments)
Difficulty: 5 of 5Summing the fiftieth power (in Shapes)
Posted on 2012-11-29 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 4 of 5MAX octagonal area (in Shapes)
Posted on 2012-11-28 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 4 of 5Prime pentagon (in Just Math)
Posted on 2012-11-27 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 5 of 5Equal digit sum (in Just Math)
Posted on 2012-11-22 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Difficulty: 4 of 5Creeping Ants (in Probability)
Posted on 2012-11-21 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 3 of 5Skewed Area (in Shapes)
Posted on 2012-11-19 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Square in Square (in Geometry) Rating: 4.00
Posted on 2012-11-17 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 3 of 5Peculiar pentagon (in Geometry) Rating: 3.00
Posted on 2012-11-15 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5An interesting sequence (in Numbers) Rating: 4.00
Posted on 2012-11-10 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Missing digit (in General) Rating: 2.33
Posted on 2012-11-03 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 3 of 5Vampire numbers (in Just Math) Rating: 5.00
Posted on 2012-10-31 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 3 of 5Monstrous prime? (in Just Math) Rating: 2.67
Posted on 2012-10-29 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
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