Only one colour, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

What brings you down but never up?

Find the missing number in the series below

13 -21 34 -55 ? -144

Look at me. I can bring a smile to your face, A tear to your eye, Or even a thought to your mind. But, I can't be seen. What am I?

You are given 2 eggs.
You have access to a 100-storey building.
Eggs can be very hard or very fragile means it may break if dropped from the first floor or may not even break if dropped from 100th floor, Both eggs are identical.
You need to figure out the highest floor of a 100-storey building an egg can be dropped without breaking.
Now the question is how many drops you need to make. You are allowed to break 2 eggs in the process

There are forty elephants and they have forty-fore heads. How can this be possible?

Solve the puzzle by telling what does below picture means.