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?

What is the next shape from answers A, B, C, and D figure?

What goes up but never comes down?

People make me, save me, change me, raise me. What am I?

What are the 50th, 63rd and 100th numbers in the sequence below?
4, 5, 8, 8, 9, 9, 12, 13, 13, 13, 17, 18, ...

You can hear me, but you can't touch or see me.

What am I?

How many letters are in the alphabet?

I have Rs.50 and I spend it in the way as below.

Can you move 2 matchsticks to form four equal sized squares.

Make a sentence consisting of three words that have the whole alphabet.