What is the next number in this series?

4,12,84,3612....

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

John and his team plan to rob a safe. They got just one chance to break the code else the local police will be informed. Below are clues:
A) Exactly one number is perfectly placed: 9 8 1
B) Everything is incorrect: 9 2 4
C) Two numbers are part of the code of the safe but are wrongly placed: 0 9 3
D) One number is part of the code of the safe but is wrongly placed: 1 4 7
E) One number is part of the code of the safe but is wrongly placed: 7 8 3

What is the Surname of Barbie Doll?

I always drive my customer away.

Who am I?

I am not alive, but I grow; I don't have lungs, but I need air; I don't have a mouth, but water kills me. What am I?

Solve below rebus puzzle?

Find the last number in the series below:

voN luJ yaM raM ---

Find the missing letter in the last circle logically in the given below picture.

John has played 50 ODI's and his average is 50. How many runs should he score in his 51st ODI, so that his average score jumps to 51?