If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

In case you were starting to feel confident, this one was meant for third graders in Vietnam. The answer is 66, but we don't blame you for scratching your head about how they got there.

In a stable, there are men and horses. In all, there are 22 heads and 72 feet. How many men and how many horses are in the stable

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

How do you go from 98 to 720 using just one letter?

Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

* *
x *
=====
* * *

A chicken farmer has figured out that a hen and a half can lay an egg and a half in a day and a half. How many hens does the farmer need to produce one dozen eggs in six days?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

Find the value of "?" in the ball picture Riddle below:

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?