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

You are given with the following sum. Each of the letters can be decoded as a digit. If we tell you that D = 5, then can you solve it entirely?

DONALD
+GERALD
=ROBERT

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

It belongs to you, but other people use it more than you do. What is it?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

What number when divided in half becomes zero?

What has 88 keys?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary, you'd think nothing was wrong with it. Actually, nothing IS wrong with it. But it is not as ordinary as you might think. If you think about it for a bit, you will find out why it is truly so unusual. So what is it? What is so unordinary about this paragraph?