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

For an extra income, John decided to work at a Hotel for one hour daily. The manager offers him that they will pay him $11 after every 11 days.
However, John offered a different proposition to the manager. The offers stand as:
He will be paid just a penny on his first day.
Two pence will be paid on the second day,
Four pence will be paid on the third day.
And so on till the 11th day.

Should the Hotel manager accept his offer?

We know that the number 7 is the prime followed by a cube. Which next number is also a prime followed by a cube?

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

This is a simple one. You just have to count the number of Fs in the given sentence.

Finished Files are the result of years of scientific study combined with the experience of years.

How many did you count?

You bought me for dinner but never eat me. What 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?

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?