John is the son of Jacob.
So,
Jacob is the_____of John's father?

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

What am I?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

Can you find the thief by just looking at the picture below?

Find three numbers such that When we multiply three numbers, we will get the prime numbers. The difference between the second and the first number is equal to the third and second.

If,

20 % 5 = 24

21 % 7 = 33

42 % 6 = 67

Then;

66 % 6 = ?

John gave half of the apples he had plus one more to Jacob. He gave half of the remaining ones plus one more to James. Now, John was left with just one apple.

Can you find out how many did he have in the beginning?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.