There are 9 balls that are identical. Only one ball is heavier than the rest. You also have a two-armed scale with which to measure the weight of the balls. How can you find the heavier ball by using the scale only twice?

Riddle Answer# Math Riddles

## Two Men Two Fishes

Two men catch two fishes in 2 minutes. At this rate, how many men are needed to catch 500 fishes in 500 minutes?

Riddle Answer## The Missing Dollar

Three men go to stay at a hotel and they are charged $30 for the room.

They split the cost with ten dollars each.

Later the manager finds out that the rate is $25 and gives the bellboy $5 to return to the guests. On the way to the room the bellboy reasons that $5 would be difficult to split among three people so he pockets $2 and gives $1 to each person.

Now each person paid $10 and got back $1. So they paid $9 each, totalling $27. The bellboy has another $2, adding up to $29. Where is the missing dollar?

Riddle Answer## Sister’s Age

When Tom was 2 years old his sister was half his age. Now, Tom is 100 years old. Then how old is his sister?

Riddle Answer## 100 Eggs With 100 Cents

You must buy hundred eggs with hundred cents. There are three types of eggs and you will need to buy all three types of eggs. Goose eggs must be bought in multiples of 20.

- 1 Chicken egg cost 5 cents
- 1 Duck egg cost 1 cent
- 20 Goose eggs cost 1 cent

How many chicken, duck and goose eggs do you need to buy?

Riddle Answer