Math Riddles

These Math Riddles are based on math concepts and can be solved with a bit of math and logic. These fun riddles can surely give you a tough time.

The Bobber

You can paddle your canoe seven miles per hour through any placid lake. The stream flows at three miles per hour. The moment you start to paddle up stream a fisherman loses one of his bobbers in the water fourteen miles up stream of you.

How many hours does it take for you and the bobber to meet?

Riddle Answer

Russian Gangster

A Russian gangster kidnaps you. He puts two bullets in consecutive order in an empty six-round revolver, spins it, points it at your head and shoots.

*Click* You’re still alive!

He then asks you, “Do you want me to spin it again and fire or pull the trigger again right away?” Which option will give you a higher probability of not being shot at?

Riddle Answer

Russian Roulette

You were captured and given one chance to escape with your life. You’re forced to play Russian Roulette with a 6-cylinder pistol. Each cylinder can hold 1 bullet. The gun has 2 bullets in it and the rounds were placed consecutively and the barrel was spun.

You took one shot and heard the click, luckily you didn’t get a bullet. You can choose to spin the barrel before the next shot. You want to live. Should you spin the barrel to improve your chances of survival?

Riddle Answer