Find out the missing number in the picture attached:

Teacher ask the student

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

what did student replied ?

Sherlock Holmes was challenged to make a pre-drawn line smaller without erasing it. He did it in fractions of seconds. How?

A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

Considering the below equation:

V + II - VI = 10
IV - X + VIII = 20
IV - VII + VI = 30

Then, I + II + III = ?

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

How many Watermelons are there in the below picture?

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?