Can you find the key in the picture below?

Only one color, 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?

A chess tournament is taking place on knock-out terms (the one who loses the match is out of the game).
(a) If 10 matches are played in total, how many players participated?
(b) If 20 players took part in the tournament, how many matches were played?

I am the fastest animal but cannot climb the tree. What am I?

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

Can you decipher these quotes by Albert Einstein?
Blf xzm mvevi hloev z kilyovn lm gsv ovevo lm dsrxs rg dzh xivzgvw.

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

Doctor Alex and a bus driver John are both in love with the same woman named Olivia. The bus driver need to go for a long trip of 10 days, Before he left he gave Olivia 10 apples.

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.