Suppose that you have a triangle with 3 ants on different vertices (corners) of the triangle. What is the probability that either 2 of the ants or all of the ants collide if all 3 ants start walking on the sides of the triangle?

Riddle Answer# Math Riddles

## The Mongolian Postal Service

The Mongolian Postal Service has a strict rule stating that items sent through the post must not be more than 1 meter long. Longer items must be sent by private carriers, and they are notorious for their expense, inefficiency, and high rate of loss of goods.

Boris was desperate to send his valuable and ancient flute safely through the post. Unfortunately, it was 1.4 meters long and could not be disassembled as it was one long hollow piece of ebony. Eventually he hit on a way to send it through the Mongolian Postal Service. What did Boris do?

Riddle Answer## Nine Lottery Balls

Ali and Zoe reach into a bag that they know contains nine lottery balls numbered 1 to 9. They each take one ball out to keep and they look at it secretly. Then, they make the following statements, in order:

**Ali**: I don’t know whose number is bigger.

**Zoe**: I don’t know whose number is bigger either.

**Ali**: I still don’t know whose number is bigger.

**Zoe**: Now I know that my number is bigger!

Assuming Ali and Zoe are perfect logicians, what is Zoe’s smallest possible number?

Riddle Answer## Kids in the Class

14 of the kids in the class are girls. 8 of the kids wear blue shirts. 2 of the kids are neither girls nor wear a blue shirt.

If 5 of the kids are girls who wear blue shirts, how many kids are in the class?

Riddle Answer## Plane Closer to Tokyo

There are two planes. One is flying from New York to Tokyo at a speed of 800 MPH. The other is flying from Tokyo to New York at a speed of 700 MPH.

When the planes meet, which one will be closer to Tokyo?

Riddle Answer