The day before yesterday, Chris was 7 years old. Next year, she’ll turn 10. How is this possible? When is Chris birthday?

Riddle Answer# Math Riddles

## 12 Black Socks and 12 White Socks

You have 12 black socks and 12 white socks in your drawer. What is the minimum number of socks that you have to take out to make sure that you have a matching pair?

Riddle Answer## Rickety Rope Bridge

Four people need to cross a rickety rope bridge to get back to their camp at night. Unfortunately, they only have one flashlight and it only has enough light left for seventeen minutes. The bridge is too dangerous to cross without a flashlight, and it’s only strong enough to support two people at any given time. Each of the campers walks at a different speed. One can cross the bridge in 1 minute, another in 2 minutes, the third in 5 minutes, and the fourth takes 10 minutes to cross.

How do the campers cross the bridge in 17 minutes?

Riddle Answer## 4 Gallons using 3 and 5 Gallon Jugs

You have two jugs. One holds exactly 3 gallons and the other 5 gallons of water. You have unlimited supply of water. How do you fill 4 gallons of water into the five-gallon jug?

Riddle Answer## Frog in 30 Meter Well

A frog is at the bottom of a 30 meter well. Each day he summons enough energy for one 3 meter leap up the well.

Exhausted, he then hangs there for the rest of the day. At night, while he is asleep, he slips 2 meters backwards.

How many days does it take him to escape from the well?

Riddle Answer