All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info
Home
Welcome to perplexus.info, flooble's perplexing puzzle portal. Here, we collect all sorts of puzzles, from simple logic questions and word tricks to in-depth math problems like probability and geometry. Click around and see if your brain is up to the task! If you're new here, make sure you sign up so that you can leave comments and submit your own problems!
> Logic> Probability> Shapes> General
> Numbers> Games> Paradoxes> Riddles
> Just Math (2)> Science> Algorithms
A circle with radius 4410001/2 is drawn at on a Cartesian plane with the origin as its centre.

How many lattice points (coordinate with integer coordinates) does it pass?
(No Solution Yet, 1 Comments) Submitted on 2021-09-22 by Danish Ahmed Khan   
Difficulty: 2 of 5 Bonus: Powersdale To Quicksville (in General) Rating: 2.00
Train X moves at an uniform speed from Powersdale to Quicksville; two stations 240 kilometers apart. Train Y starts from Powersdale precisely one hour after Train X departed (also from Powersdale) and, after two hours, comes to a point that Train X had passed 45 minutes previously.

Train Y now increases its speed by 5 kilometers per hour and it overtakes Train X as soon it reaches Quicksville.

Determine the original speed of both the trains.
(Solution Posted, 4 Comments) Submitted on 2007-03-20 by K Sengupta   
Difficulty: 2 of 5Range (in Just Math)
Posted on 2021-09-20 by Danish Ahmed Khan (No Solution Yet, 3 Comments)
Difficulty: 4 of 5Largest circle in quadrilateral (in Geometry)
Posted on 2021-09-17 by Danish Ahmed Khan (No Solution Yet, 6 Comments)
Difficulty: 3 of 5Polynomial substitution (in Just Math)
Posted on 2021-09-15 by Danish Ahmed Khan (No Solution Yet, 0 Comments)
Difficulty: 2 of 5Legally Blonde 2 (in Liars and Knights) Rating: 3.67
Posted on 2021-09-13 by Math Man (No Solution Yet, 3 Comments)
Difficulty: 3 of 55 equilaterals (in Geometry) Rating: 5.00
Posted on 2021-09-10 by Jer (No Solution Yet, 5 Comments)
Difficulty: 3 of 5Bung (in Word Problems) Rating: 3.00
Posted on 2021-09-08 by Ady TZIDON (No Solution Yet, 3 Comments)
Difficulty: 3 of 5The 10th distance (in Just Math) Rating: 4.50
Posted on 2021-09-06 by Ady TZIDON (No Solution Yet, 7 Comments)
Difficulty: 3 of 5Grid squares (in Just Math)
Posted on 2021-09-03 by Danish Ahmed Khan (No Solution Yet, 4 Comments)
Difficulty: 3 of 5Bishops galore (in Games) Rating: 4.00
Posted on 2021-09-01 by Ady TZIDON (No Solution Yet, 6 Comments)
Difficulty: 2 of 5Angle bisector in isosceles trapezoid (in Geometry) Rating: 3.00
Posted on 2021-08-30 by Jer (No Solution Yet, 2 Comments)
Difficulty: 2 of 5Bivariate equation (in Numbers)
Posted on 2021-08-27 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 2 of 5SOD revealed (in General) Rating: 5.00
Posted on 2021-08-26 by Ady TZIDON (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Derivative inequation (in Calculus)
Posted on 2021-08-25 by Danish Ahmed Khan (No Solution Yet, 0 Comments)
Difficulty: 3 of 5Two spherical scoops (in Shapes) Rating: 4.00
Posted on 2021-08-24 by Jer (No Solution Yet, 2 Comments)

Recently Posted Solutions:
Difficulty: 2 of 5Pyramid from a square (in Shapes)
Submitted By Jer. Solution posted on 2021-08-07 11:30:34
Difficulty: 3 of 5Having a Ball with Newton in Floobleland (in Science)
Submitted By Kenny M. Solution posted on 2021-07-28 06:08:16
Difficulty: 2 of 5Product of odd primes with distinct digits (in Numbers)
Submitted By Larry. Solution posted on 2021-07-26 10:00:36
Difficulty: 2 of 5Number the Grid (in Numbers)
Submitted By Charlie. Solution posted on 2021-07-22 21:13:14
Difficulty: 3 of 5Two Digit Average 2 (in Numbers)
Submitted By Larry. Solution posted on 2021-07-10 15:17:14
Please log in:
Login:
Password:
Remember me:
Sign up! | Forgot password


Search:
Search body:
Forums (2)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (4)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:
Copyright © 2002 - 2021 by Animus Pactum Consulting. All rights reserved. Privacy Information