There was a minor accident with a doctor's son but the doctor noticed no major injury. After the treatment, the father of that doctors son is sitting with the son of the doctor without the doctor being in the room.

How can this be possible?

Can you find out which number multiplied by itself will give the output as 12345678987654321?

A woman lives in a Tall building thirty-six floors high and served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

If,

Akriti = 631
Levis = 521
Sroti = 521
Aneel = 533
Then,
Sunil =?

Decode this picture on T-Shirt and tell what it says ?

Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

No matter how little or how much you use me, you change me every month. What am I?

O_er_t_o_

Complete the missing letters of the given word.