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

There are forty elephants and they have forty-fore heads. How can this be possible?

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

If you go to the movies and you're paying, is it cheaper to take one friend to the movies twice, or two friends to the movies at the same time?

Nodes are shown below and you need to connect them based on the following rule: Every node can be connected to the number of nodes inside them, i.e. the first node there is a value of 1 which indicates that the first node can connect to exactly one node only.Can you do it?

In a guessing game, five friends had to guess the exact numbers of apples in a covered basket.
Friends guessed 22, 24, 29, 33, and 38, but none of the guesses was correct. The guesses were off by 1, 8, 6, 3, and 8 (in random order).

Can you determine the number of apples in a basket from this information?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

The more it dries, the wetter it becomes. Can you tell what it is?

If you were to put a coin into an empty bottle and then insert a cork into the neck, how could you remove the coin without taking out the cork or breaking the bottle?

How many sides does a circle have?