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

Why despite killing dozens of people Charley and Wilma were not punished?

What Does this text mean:

important=important

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?

A convention is held where all the big logicians are summoned. The master places a band on everyone's forehead. Now all of them can see others bands but can't see his own. Then they are told that there are different colours of bands. All the logicians sit in circle and they are further explained that a bell will ring at regular intervals. The moment when a logician knew the colour of band on his forehead, he will leave at the next bell. If anyone leaves at the wrong bell, he will be disqualified.

The master assures the logicians that the puzzle will not be impossible for anyone of them. How will the logicians manage ?

What jumps when it walks and sits when it stands?

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

Can you solve the below tricky visual equation?

What occurs twice in a week, once in a year but never in a day?