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

What is the four-digit number in which the first digit is one-third the second, the third is the sum of the first two, and the last is three times the second?

No one wants to have it, but if one got it, he does not want to lose it. What is It?

How could a baby fall out of a twenty-story building onto the ground and live?

Can you guess the name of the month by looking the below rebus ?

If,
29 - 1 = 30
9 - 1 = 10
14 - 1 = 15

Based on similar logic, Can you prove that the below algebraic equation is true?
11 - 1 = 10 ?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

A car meter reading shows 72927 miles a palindromic number.
what is the minimum number of miles you would need to travel to see another palindromic number on the car meter reading?

There are two guys standing face to face in a room. On a wall, there is a clock. One of those is a prophet. He tells the other guy that he will be stabbed in the back in five minutes.

Shocked to hear that, the other guy stares at the clock. Just after the five minutes, he is stabbed on the back. Can you tell what happened?

If,

Akriti = 631
Levis = 521
Sroti = 521
Aneel = 533
Then,
Sunil =?