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

What is always in front of you but can’t be seen?

Why are all black people so quick ?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

The horse jumps over the king.
Strangely there is absolutely no scratch on him.

Can anyone explain, how is this possible?

How many sides does a circle have?

Andrew’s doctor gives him three pills and tells him to take one every half hour. How much time will have passed by the time Andrew’s taken all three pills?

There are three boxes of different sizes with three cupcakes inside each of the boxes in Christina's kitchen. At night her daughter wakes up and goes to the kitchen. She opens a box and eats all three cakes.

But in the morning Christina finds out that each box still had three cupcakes. How?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?