A Cone and a Sphere (in Just Math) Posted on 2018-09-07 by Danish Ahmed Khan (No Solution Yet, 6 Comments)
Complicated Tangency (in Geometry) Posted on 2018-09-01 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
What is the best question? (in Probability) Rating: 5.00 Posted on 2018-05-02 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Where's Bob? (in General) Rating: 4.50 Posted on 2018-05-01 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Some of these and some of those (in Numbers) Posted on 2018-04-30 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
When polynomial and trigo unite! (in Calculus) Posted on 2018-04-24 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
If only it's a power of three (in Just Math) Posted on 2018-04-22 by Danish Ahmed Khan (No Solution Yet, 0 Comments)
An almost regular tetrahedron (in Geometry) Posted on 2018-04-20 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
The Devil 30-gon (in Geometry) Posted on 2018-04-17 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Angle in an Equilateral Pentagon (in Geometry) Posted on 2018-04-12 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Easy Peasy Parabola (in Geometry) Posted on 2018-04-11 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Parenthetical Integer (in Numbers) Posted on 2018-04-04 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Cube Decomposition (in Geometry) Posted on 2018-04-02 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Pascal Determinant (in Just Math) Posted on 2018-03-31 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Goldiolics (in Just Math) Rating: 5.00 Posted on 2018-03-30 by Danish Ahmed Khan (No Solution Yet, 6 Comments)
Boxed Parabolas (in Geometry) Posted on 2018-03-24 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Not enough information! (in Science) Posted on 2018-03-23 by Danish Ahmed Khan (No Solution Yet, 7 Comments)
Divisibility in a sequence (in Numbers) Posted on 2017-08-12 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Palindromic sum (in Just Math) Posted on 2017-08-08 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Nondivisibility by 11 (in Just Math) Rating: 4.00 Posted on 2017-08-06 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Same Real Roots (in Just Math) Posted on 2016-12-10 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Vieta's derivatives (in Just Math) Posted on 2016-12-02 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
composite function (in Calculus) Rating: 3.00 Posted on 2016-11-29 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Equal Areas on Circles (in Geometry) Posted on 2016-11-19 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Don't be confused (in General) Posted on 2016-11-14 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Roots Ready to Relate (in Just Math) Rating: 4.00 Posted on 2016-11-06 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Matrix Mathematics (in Just Math) Posted on 2016-10-30 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
A little twist (in Just Math) Posted on 2016-10-21 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
get the real part of the problem (in Just Math) Posted on 2016-10-16 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
this is the range of my root (in Just Math) Posted on 2016-10-14 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
polynomial problem 3 (in Just Math) Posted on 2016-10-08 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
polynomial problem 2 (in Just Math) Rating: 3.00 Posted on 2016-09-30 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Polynomial problem (in Just Math) Posted on 2015-03-22 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Pentagon Fraction Minimizing (in Just Math) Posted on 2015-03-16 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Triangle to Triangle (in General) Posted on 2015-03-07 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Minimizing Perimeter (in Shapes) Posted on 2015-03-04 by Danish Ahmed Khan (No Solution Yet, 15 Comments)
Equilateral fun (in Geometry) Posted on 2015-02-28 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Prime and perfect (in Numbers) Posted on 2015-02-27 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Repeated Words (in Word Problems) Posted on 2015-02-19 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
The LSD of Prime Numbers (in Numbers) Posted on 2015-02-08 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Very very colourful (in General) Posted on 2015-02-06 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Palindromes from Digit Sum Series (in Numbers) Posted on 2015-02-03 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Integer Triplets with a Difference (in Numbers) Posted on 2015-01-30 by Danish Ahmed Khan (No Solution Yet, 6 Comments)
A Self-Terminating Sequence (in Numbers) Posted on 2015-01-29 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Final Minus Two (in Just Math) Posted on 2015-01-24 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Easy as One, Two, Three (in Numbers) Posted on 2015-01-20 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Trigo inequality (in Just Math) Posted on 2014-12-11 by Danish Ahmed Khan (No Solution Yet, 11 Comments)
World War I sword (in Riddles) Posted on 2014-09-02 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
A PowerSum Puzzle (in Numbers) Posted on 2014-08-27 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
A world cup problem (in Probability) Rating: 1.50 Posted on 2014-08-26 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Trigonometric progression (in Just Math) Posted on 2014-08-24 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
The Real Cyclic Quad (in Geometry) Rating: 1.50 Posted on 2014-08-23 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Minimizing Trigo value (in Numbers) Rating: 4.00 Posted on 2014-03-02 by Danish Ahmed Khan (No Solution Yet, 7 Comments)
Penta-Quadratic (in Just Math) Rating: 4.00 Posted on 2014-02-23 by Danish Ahmed Khan (No Solution Yet, 5 Comments)
Overlapping Triangles (in Geometry) Posted on 2014-02-22 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
The Equiangular Hexagon (in Geometry) Posted on 2014-02-17 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Remove last three to get cube root (in Numbers) Posted on 2014-02-11 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Cards In A Circle (in General) Posted on 2014-02-09 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Bisection In a triangle (in Geometry) Posted on 2014-02-01 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Deduction Problem (in Numbers) Posted on 2014-01-31 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
A Tetrahedron (in General) Rating: 3.00 Posted on 2014-01-30 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Passing On A Track (in Just Math) Rating: 3.00 Posted on 2014-01-29 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Lets Concatenate (in Just Math) Posted on 2014-01-28 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
3 INCIRCLES (in Geometry) Rating: 3.00 Posted on 2014-01-25 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Incircles in equilateral triangles (in Geometry) Posted on 2014-01-18 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Pentagon in a semicircle (in Geometry) Posted on 2014-01-11 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
120° Breeds 90° (in Geometry) Rating: 3.00 Posted on 2014-01-04 by Danish Ahmed Khan (No Solution Yet, 0 Comments)
Trigonometric product (in Numbers) Posted on 2013-12-29 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Algebra and Primes (in Numbers) Rating: 4.00 Posted on 2013-12-25 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Fight (in Logic) Rating: 3.00 Posted on 2013-12-20 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Two Rectangles (in Geometry) Rating: 3.00 Posted on 2013-12-09 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
APPLE + LEMON = BANANA (in Numbers) Posted on 2013-12-04 by Danish Ahmed Khan (No Solution Yet, 5 Comments)
Square in a Pentagon (in Geometry) Rating: 3.00 Posted on 2013-12-01 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Continued Multiples (in Numbers) Rating: 5.00 Posted on 2013-11-29 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Pentagon in a Square (in Geometry) Posted on 2013-11-28 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Equal sums on a circle (in General) Posted on 2013-11-26 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Safe chess piece (in Games) Rating: 3.33 Posted on 2013-11-21 by Danish Ahmed Khan (No Solution Yet, 9 Comments)
Testing Three Students (in Just Math) Posted on 2013-11-20 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
A 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)
Four Egyptian Fractions (in Numbers) Posted on 2013-11-13 by Danish Ahmed Khan (No Solution Yet, 6 Comments)
Consecutive Additions (in Numbers) Rating: 3.00 Posted on 2013-11-12 by Danish Ahmed Khan (No Solution Yet, 6 Comments)
Hexagon in a square (in Shapes) Posted on 2013-11-10 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Four Digits (in Numbers) Rating: 4.00 Posted on 2013-11-05 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Triangles And Rectangles Pair (in Geometry) Posted on 2013-11-01 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Fill In The Blanks (in Numbers) Posted on 2013-10-30 by Danish Ahmed Khan (No Solution Yet, 5 Comments)
Slow Cows (in General) Rating: 3.50 Posted on 2013-10-28 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Trigo computation (in Numbers) Posted on 2013-10-11 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Quintic Expression (in Just Math) Rating: 4.00 Posted on 2013-10-09 by Danish Ahmed Khan (No Solution Yet, 8 Comments)
Non existing altitudes (in Geometry) Posted on 2013-10-03 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Three Semi-Circles (in Geometry) Posted on 2013-09-22 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Mysterious Sequence (in Sequences) Rating: 5.00 Posted on 2013-09-11 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
play with digit (in Numbers) Posted on 2013-09-10 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
The 1234 Problem (in Numbers) Posted on 2013-09-05 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
The Last Two Digits (in Just Math) Rating: 4.00 Posted on 2013-09-04 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
The Broken Cash Register (in Just Math) Posted on 2013-08-30 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Wild and Wooley Numbers (in Numbers) Posted on 2013-08-28 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
The 1979 Series (in Sequences) Posted on 2013-08-27 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
The cunning Condition (in Just Math) Posted on 2013-08-25 by Danish Ahmed Khan (No Solution Yet, 5 Comments)
Related Series (in Sequences) Posted on 2013-08-23 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Dodecagonal Diagonals (in Shapes) Posted on 2013-08-22 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Tread Ware (in General) Rating: 2.50 Posted on 2013-08-20 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Random Queens (in Probability) Posted on 2013-08-16 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
NegaBinary Numbers (in Algorithms) Posted on 2013-08-14 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Morley's Ghost (in Geometry) Rating: 3.50 Posted on 2013-08-10 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
An Elusive Quadratic (in Numbers) Posted on 2013-08-09 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
A Funny Function (in Calculus) Rating: 4.00 Posted on 2013-08-01 by Danish Ahmed Khan (No Solution Yet, 7 Comments)
Squarely Sorted (in Numbers) Posted on 2013-07-27 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
A Pleasurable Puzzle (in Just Math) Posted on 2013-07-26 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Casting Out Zeros (in Just Math) Posted on 2013-07-25 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Weighted Quadrilateral (in Geometry) Rating: 3.00 Posted on 2013-07-25 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Prince Rupert's Tetrahedron (in Shapes) Posted on 2013-07-21 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
7 boolean Questions (in Logic) Posted on 2013-07-19 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Penny Parity (in General) Rating: 3.00 Posted on 2013-07-18 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Framing (in Geometry) Rating: 4.00 Posted on 2013-07-16 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Upside Down LCD Display (in Numbers) Posted on 2013-07-15 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Every Die Face (in Probability) Posted on 2013-07-12 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Factorials AND Powers (in Numbers) Posted on 2013-07-11 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Simple Thinking (in Numbers) Posted on 2013-07-09 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
The Seventh Power (in Numbers) Posted on 2013-07-08 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Pascal Triangle (in Numbers) Posted on 2013-07-06 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Mystery Matrix (in Sequences) Posted on 2013-07-04 by Danish Ahmed Khan (No Solution Yet, 6 Comments)
222 (in Word Problems) Rating: 2.00 Posted on 2013-07-02 by Danish Ahmed Khan (No Solution Yet, 11 Comments)
Digital Factorial (in Numbers) Posted on 2013-07-01 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
What's the ... (in Just Math) Posted on 2013-06-27 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Infinite Product (in Numbers) Posted on 2013-06-24 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
PRIMY inequality (in Just Math) Posted on 2013-06-22 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Shiny Numbers (in Just Math) Posted on 2013-06-20 by Danish Ahmed Khan (No Solution Yet, 6 Comments)
Sliding Coin puzzle (in General) Rating: 3.50 Posted on 2013-06-19 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
A Black and White Issue (in Just Math) Rating: 1.00 Posted on 2013-06-18 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Introductions all around (in General) Rating: 3.00 Posted on 2013-06-14 by Danish Ahmed Khan (No Solution Yet, 8 Comments)
Mouse eating Cheese (in Logic) Posted on 2013-06-12 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Lion and Tamer (in Logic) Rating: 4.00 Posted on 2013-06-10 by Danish Ahmed Khan (No Solution Yet, 7 Comments)
Chess game reconstruction (in Games) Posted on 2013-06-08 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Mean Distance Two Points (in Shapes) Posted on 2013-06-01 by Danish Ahmed Khan (No Solution Yet, 8 Comments)
Strings of Nines (in Numbers) Posted on 2013-05-29 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Crossed Cylinders (in Shapes) Rating: 4.00 Posted on 2013-05-25 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Simple expression but difficult answer (in Just Math) Posted on 2013-05-21 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Squares and Cubes II (in Numbers) Rating: 3.00 Posted on 2013-05-17 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Divisibility of 29 (in Numbers) Rating: 4.00 Posted on 2013-05-15 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Diophantine Equation (in Just Math) Posted on 2013-05-14 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Positive Integer, Odd Digits, Divisibility (in Just Math) Rating: 3.67 Posted on 2013-05-12 by Danish Ahmed Khan (No Solution Yet, 5 Comments)
Lovely Fibonacci (in Just Math) Posted on 2013-05-11 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Time for some Prime (in Just Math) Posted on 2013-05-05 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Dark Divisibility (in Just Math) Rating: 5.00 Posted on 2013-04-27 by Danish Ahmed Khan (No Solution Yet, 18 Comments)
The Seven Primes (in Just Math) Posted on 2013-04-26 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Equaliteral Triangle Division (in Shapes) Posted on 2013-04-25 by Danish Ahmed Khan (No Solution Yet, 5 Comments)
2012 sum Digit (in Just Math) Posted on 2013-04-23 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Incredibly difficult sequence (in Sequences) Posted on 2013-04-21 by Danish Ahmed Khan (No Solution Yet, 0 Comments)
Elegantly Greedy Pirates (in Just Math) Rating: 3.00 Posted on 2013-04-20 by Danish Ahmed Khan (No Solution Yet, 5 Comments)
Population of Funkytown (in Logic) Posted on 2013-04-10 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Square division II (in Shapes) Rating: 1.00 Posted on 2013-04-08 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Area of hexagon... (in Geometry) Posted on 2013-04-06 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Finding Average (in Logic) Rating: 1.50 Posted on 2013-04-01 by Danish Ahmed Khan (No Solution Yet, 9 Comments)
Dangerous Expression for Rationals (in Numbers) Posted on 2013-03-31 by Danish Ahmed Khan (No Solution Yet, 5 Comments)
Four Coin Theorem (in Shapes) Posted on 2013-03-17 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Strange Equation (in Just Math) Posted on 2013-03-11 by Danish Ahmed Khan (No Solution Yet, 10 Comments)
Product in a Circle (in Shapes) Posted on 2013-03-09 by Danish Ahmed Khan (No Solution Yet, 0 Comments)
Magical Magician (in Numbers) Rating: 3.50 Posted on 2013-02-23 by Danish Ahmed Khan (No Solution Yet, 6 Comments)
Perfect squares (in Numbers) Rating: 4.00 Posted on 2013-02-21 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Purely prime (in Just Math) Rating: 5.00 Posted on 2013-02-19 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Primed to Square (in Just Math) Rating: 4.00 Posted on 2013-02-15 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Divisibility rule (in Just Math) Posted on 2013-02-13 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Finding numbers (in Numbers) Posted on 2013-02-12 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Egyptian Number (in Just Math) Rating: 2.33 Posted on 2013-02-09 by Danish Ahmed Khan (No Solution Yet, 5 Comments)
Midpoint problem (in Geometry) Rating: 3.00 Posted on 2013-02-03 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Sum of real Roots (in Just Math) Posted on 2013-01-27 by Danish Ahmed Khan (No Solution Yet, 6 Comments)
Cute Divisibility (in Numbers) Posted on 2013-01-26 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Some basic Maths (in Just Math) Posted on 2013-01-19 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Last three digits (in Just Math) Rating: 2.00 Posted on 2013-01-16 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Rhombus problem, with tangents and parallel (in Geometry) Rating: 3.00 Posted on 2013-01-13 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Thirteenth power (in Just Math) Posted on 2013-01-12 by Danish Ahmed Khan (No Solution Yet, 7 Comments)
Divisibility of factorials II (in Numbers) Posted on 2013-01-01 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Divisibility of factorials (in Numbers) Posted on 2012-12-29 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Modular mathematics (in Just Math) Rating: 4.00 Posted on 2012-12-28 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Area of semicircle (in Shapes) Posted on 2012-12-27 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Perpendicular (in Geometry) Rating: 3.33 Posted on 2012-12-26 by Danish Ahmed Khan (No Solution Yet, 5 Comments)
n+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)
Not a Prime (in Just Math) Rating: 3.00 Posted on 2012-12-20 by Danish Ahmed Khan (No Solution Yet, 6 Comments)
Transfer of initial digit (in Numbers) Posted on 2012-12-20 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
A little Generalization (in Numbers) Posted on 2012-12-18 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Inequality in sums of digits (in Just Math) Posted on 2012-12-17 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Ones and Nines (in Just Math) Posted on 2012-12-13 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Possibilities of a (in Just Math) Rating: 3.00 Posted on 2012-12-07 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
GCD of Fibonacci (in Numbers) Posted on 2012-12-06 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Products of digits. (in Just Math) Posted on 2012-12-05 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Find the triplets (in Just Math) Posted on 2012-12-04 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Divisible by 3. (in Just Math) Rating: 3.00 Posted on 2012-12-02 by Danish Ahmed Khan (No Solution Yet, 5 Comments)
Summing the fiftieth power (in Shapes) Posted on 2012-11-29 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
MAX octagonal area (in Shapes) Posted on 2012-11-28 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Prime pentagon (in Just Math) Posted on 2012-11-27 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Equal digit sum (in Just Math) Posted on 2012-11-22 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Creeping Ants (in Probability) Posted on 2012-11-21 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Square in Square (in Geometry) Rating: 4.00 Posted on 2012-11-17 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Peculiar pentagon (in Geometry) Rating: 3.00 Posted on 2012-11-15 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
An interesting sequence (in Numbers) Rating: 4.00 Posted on 2012-11-10 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Missing digit (in General) Rating: 2.33 Posted on 2012-11-03 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Vampire numbers (in Just Math) Rating: 5.00 Posted on 2012-10-31 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Monstrous prime? (in Just Math) Rating: 2.67 Posted on 2012-10-29 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
