It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

Paul's height is six feet, he's an assistant at a butcher's shop and wears size 9 shoes. What does he weigh?

Take number 1000 and then add 20 to it.
Now add 1000 one more time.
Now add 30.
Now add 1000 one more time.
Now add 40.
Now add 1000 one more time.
Now add 10.

What is the total?

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

Two natural numbers have a sum of less than 100 and are greater than one.

John knows the product of the numbers and Jacob knows the sum of numbers.

The following conversation takes place between them:
John: 'I am not aware of those numbers.'
Jacob: 'I knew you wouldn't be. I am not aware myself.'
John: 'Now I know them!'
Jacob: 'Now I know them, too!'

What are the two numbers?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

Count the number of triangles in the picture below:

10+10 and 11+11 can give you the same answer.

Explain how?

What do you get if you add 2 to 100 four times?