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

Can you count the number of squares in the figure below?

Two friends were betting. One said to the other, "The coin will be flipped twenty times and each time the coin lands on the head, I will give you $2 and each time it lands on the tale, you will give me $3." After flipping the coin twenty times not a single penny was exchanged among them.

How many times did the coin land on heads?

The peacock is a bird that does not lay eggs. How do they get baby peacocks?

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

Complete the table series riddle by finding the number that can replace "??".

I inserted a coin in a bottle and closed its mouth with the help of a cork. Now, I was able to take the coin out from the bottle without taking out the cork or breaking the bottle. Can you tell me how I did it?

I have an eye but still cannot see.

Who am I?

I travel all around the world but always stay in the corner. What am I?