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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 (1)> General (1)
> Numbers (2)> Games> Paradoxes> Riddles
> Just Math (2)> Science> Algorithms
Circle C has radius 4, and AB is a diameter of C. Two circles of radius 1 are each internally tangent to C and are tangent to AB at distinct points P and Q. Compute PQ.
(No Solution Yet, 0 Comments) Submitted on 2024-10-29 by Danish Ahmed Khan   
Difficulty: 3 of 5 Bonus: Animal Magic (in Numbers) Rating: 4.00
Can you find one five figure number, with distinct digits between 1 and 9, which satisfies all four of the following equations?

SNAKE * 2 = MERES
COYPU * 8 = POODLE
TIGER * 13 = BEWAIL
OKAPI * 14 = HIJACK

Repeated letters within an equation refer to the same digit. The same letter appearing in different equations does not necessarily refer to the same digit.

The puzzle can be solved from just two equations. The other two are for fun/reference.

This is similar to Can't see the wood for the trees

(No Solution Yet, 7 Comments) Submitted on 2008-03-21 by Josie Faulkner   
Difficulty: 3 of 5Number Powered Cubed Number (in Numbers)
Posted on 2024-10-29 by K Sengupta (No Solution Yet, 1 Comments)
Difficulty: 3 of 5How Fast is the Surface Area Increasing? (in Calculus)
Posted on 2024-10-28 by K Sengupta (No Solution Yet, 1 Comments)
Difficulty: 2 of 5Perfect roots (in Numbers)
Posted on 2024-10-28 by Danish Ahmed Khan (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Cube rooted equation (in Just Math)
Posted on 2024-10-27 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Solve the Following Equation (in General)
Posted on 2024-10-27 by K Sengupta (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Integer Right Triangles with a Fixed Inradius (in Geometry)
Posted on 2024-10-26 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Removing Zeros to Reveal the Tail of a Product (in Numbers)
Posted on 2024-10-26 by Danish Ahmed Khan (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Rational Algebraic Expressions Problem (in Just Math)
Posted on 2024-10-25 by Brian Smith (No Solution Yet, 2 Comments)
Difficulty: 3 of 5Geography and Calendar (in General)
Posted on 2024-10-25 by Ady TZIDON (No Solution Yet, 0 Comments)
Difficulty: 3 of 5Mixed Set of Radical and Cubic Equation (in Just Math)
Posted on 2024-10-24 by K Sengupta (No Solution Yet, 1 Comments)
Difficulty: 2 of 5Hidden Body Parts (in Word Problems)
Posted on 2024-10-24 by K Sengupta (No Solution Yet, 2 Comments)
Difficulty: 3 of 5H & V nim (in Games)
Posted on 2024-10-23 by Jer (No Solution Yet, 0 Comments)
Difficulty: 3 of 5Set of 2 Radical Equations (in Just Math)
Posted on 2024-10-23 by K Sengupta (No Solution Yet, 1 Comments)
Difficulty: 3 of 5Solving Nested Radical Equation (in Just Math)
Posted on 2024-10-22 by K Sengupta (No Solution Yet, 2 Comments)

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