How old is your son? asked a man to his neighbour. My son is five times as old as my daughter and my wife is five times as old as my son. I am twice as old as my wife whereas my grandmother, who is celebrating her eighty-first birthday is as old as all of us put together.

How old is the man's son ?

Before the start of the car race, John and Jacob have the same amount of fuel in their car. With this fuel, John can drive for 4 hours while Jacob can drive five hours.
After a time they realize that the amount of fuel left in John's car is 1/4th of the fuel in Jacob's.

For how long they are racing?

Can you tell a 3D object that has just two surfaces?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

I am the beginning of everything, the end of everywhere. I'm the beginning of eternity, the end of time and space. What am I?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

Which Travels Faster? Solve below famous picture riddle:

You can hear me, but you can't touch or see me.

What am I?

What am I?

Find the mistake in the below maths equations

A = 2
A(A-1) = 2(A-1)
A2-A = 2A-2
A2-2A = A-2
A(A-2) = A-2
A = 1