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

Prove that the below maths equation is true.

8 + 8 = 91

You have a 12 liters jug full of water. You have two empty 8 liters and 5 liters jug. How can you divide the water into two equal parts using these jugs?

In the Thar desert, 3 men found a big 24L Jar is full of water. Since there is a shortage of water so they decided to distribute the water among themselves such that they all have equal amounts of it. But they only have a 13L, a 5L and an 11-litre Jar.

How do they do it?

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

Find the next number in the series.
1 10 24 43 67 ?

How can one talk without saying a single word?

What has 13 hearts but no other organs?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

What number should come in place of the question mark below?