Mind Your Decisions

Multiply Numbers Close To 100 In Your Head

Viral Cookie Logic Puzzle From Brazil

How To Calculate Square Roots Digit By Digit, By Hand

The Missing Ten Dollars Riddle

An Impossible Perimeter Problem

What is the correct answer to 50÷5×2 + 10 = ?

How To Solve 3^x = x^9

Which Is Larger: 3.14 to pi Or pi to 3.14 ?

3 Bucket Question 90 Percent Missed This