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

Pronounced as 1 letter, And written with 3, 2 letters there are, and 2 only in me. I’m double, I’m single, I’m black blue and grey, I’m read from both ends, and the same either way. What am I?

I don't get anymore wetter, no matter how much rain falls on me.

Be active and find the killer in the picture Riddle below.

Here is a conversation between a couple who both are software professionals.

Husband: Hey! What is your date of birth?
Wife Replied Angrily: It is 591062400
Husband after doing some calculations replied, "Got It".

What is the DOB of the wife?

Can you name three consecutive days without using the words Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday?

What have one eye but still cannot see?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?