You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

An artist while painting a scenic beauty, decides to paint three layers of blue colour on the sky.

Which layer will go on the first?

A man is lying dead in a field where no one is around. His head is split open and his legs are disfigured. Near to him, there is an unopened package. No living organism can be found anywhere at the crime scene.

How did he die?

Use the digits from 1 up to 9 and make 100.

Follow the rules.
=> Each digit should be used only once.
=> You can only use addition.
=> For making a number, two single digits can be combined (for example, 4 and 2 can be combined to form 42 or 24)
=> A fraction can also be made by combining the two single digits (for example, 4 and 2 can be combined to form 4/2 or 2/4)

Question: how can we do this?

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

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

why?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

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?

why number 8549176320 is one of a kind?

What part of the chicken has the most feathers?