Be active and find the killer in the picture Riddle below.

What does a man do only once in his lifetime, but women do once a year after they are 29?

A boy collects white seashells from the sea and brings them home every night. When he has enough of them, he decides to sell them to a trader.

The trader is ready to buy the shells and he asks the boy about the quantity. At this, the boy starts calculating. He has a giant box that contains 3 mini boxes. Two of them have another mini box inside. If the giant box can hold 50 shells, how many brown shells can he sell to the trader?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

Why 1729 is a magic number? Answer Logically.

What is harder to catch the faster you run?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.

I am five letter word that is under you.
If you remove my 1st letter, then I am over you.
If you remove my 1st and 2nd letters then I am all around you.

Who am I?