A doctor and a boy were fishing. The boy was the doctor’s son, but the doctor was not the boy’s father. Who was the doctor?

Rahul decided to meet Simran so he boards a local train from Bombay station. Just after the station, there is a 1km long tunnel. The train starts and is now accelerating. Rahul is a claustrophobic guy, so what is the best position for him to sit?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

Find the next number in the series below

21 32 54 87 131 ?

You’re out on the water and see a boat filled with people. You look away for a second and look back again, but this time you don’t see a single person on the boat. Why? Hint: The boat did not sink.

Prove that twice of ten is the same as twice of eleven.

Find out which of the given views in the picture is accurately the top view of the given pyramid.

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?