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

How can a man go eight days without sleep?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

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?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

A father's child, a mother's child, yet no one's son.

Who am I?

Two boys wish to cross a river. The only way to get to the other side is by boat, but that boat can only take one boy at a time. The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat.

How?

In the Mexico City area, there are two Houses H1 and H2. Both H1 and H2 have two children each.
In House H1, The boy plays for Mexico Youth academy and the other child plays baseball.
In House H2, The boy Plays soccer for his school in Mexico and they recently have a newborn.

Can you prove that the probability of House-H1 having a girl child is more than that of House-H2?

The following four words might seem abrupt to you. But you can make them meaningful by just adding vowels.
RDSH
GGPLNT
TMT
NN

Hint: All of them are vegetables.

What is in seasons, seconds, centuries and minutes but not in decades, years or days?