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Complete the missing letters of the given word.

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

A man lives on the fifteenth floor of an apartment building. Every morning he takes the elevator down to the lobby and leaves the building. In the evening, he gets into the elevator, and, if there is someone else in the elevator, or if it was raining that day, he goes back to his floor directly. Otherwise, he goes to the tenth floor and walks up five flights of stairs to his apartment. Can you explain why he does this?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

John decided to give his bike 3 coats of paint. Which coat would go on the first?

Sherlock breaks into a crime scene. The victim is the owner who is slumped dead on a chair and have a bullet hole in his head. A gun lies on the floor and a cassette recorder is found on the table. On pressing the play button, Sherlock hears the message 'I have committed sins in my life and now I offer my soul to the great Lord' and followed a gunshot Sherlock smiles and informed the police that's its a murder.

Why did he think so?

A man dies of old age on his 25 birthday. How is this possible?

Find the next number in the following series:
6, 14, 26, 98, __?

Can you find out the missing number in the grid?

There are six people in a family namely M, N, O, P, Q and R.

R and O are brother and sister.

N is the brother of Q's husband.
P is the father of M and grandfather of R.

How many male members are in the family?