I am quite hot but become too cold if you remove the first two letters. What am I?

Who always enjoys poor health?

Can you count the number of children in the picture below

There is a box. The area of its top is 240 square units, the area of the front is 300 square units and the area of the end is 180 square units.

Can you calculate the dimensions of this box with the given data?

A tree doubled in height each year until it reached its maximum height over the course of ten years. How many years did it take for the tree to reach half its maximum height?

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?

Take away the whole and some still remain. What is it?