Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

What's a single-digit number with no value?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).

A rubber ball keeps on bouncing back to 2/3 of the height from which it is dropped. Can you calculate the fraction of its original height that the ball will bounce after it is dropped and it has bounced four times without any hindrance ?

I look flat, but I am deep. Hidden realms I shelter. Lives I take, but the food I offer. At times I am beautiful. I can be calm, angry, and turbulent. I have no heart but offer pleasure as well as death. No man can own me, yet I encompass what all men must have. What am I?

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

What does this rebus means ?

PROG WORKRESS

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.