Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

How can you throw a ball as hard as you can and have it come back to you even if it doesn't hit anything there is nothing attached to it and no one else catches or throws it.

Can you start the fire using two pieces of wood?

First, think of the colour of clouds. Next think the colour of snow. Last, think of the colour of the moon. Now, what do cows drink?

A train full of passengers goes through a tunnel. When the train comes out from the other end, there is no single person on the train.

How did it happen?

What month of the year has 28 days?

I am thinking of a five-digit number such that:
The first and last digits are the same, their submission is an even number and multiplication is an odd number and is equal to the fourth number. Subtract five from it and we obtain the second number. Then divide into exact halves and we get the 3rd number.

What number I am thinking of?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

What has hands, but can’t clap?