Can you fill the blank with the correct number?

6 30 870 756030 _____

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

I can turn polar bears white.
I can make anyone dance.
I can make everyone cry
I can make your hands clap
I can make you thin.
I can make you smile.
I can make you smile

Can you guess the riddle?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

What are the next two letters in the following series and why?
W A T N T L I T F S _ _

*Hint: Check Puzzle Title

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?

I am green and found in the forest and have needles instead of leaves. What am I?
Hint 1: It can be used for Christmas decorations.
Hint 2: I have a strong, scent that is used in air fresheners.

If you were to put a coin into an empty bottle and then insert a cork into the neck, how could you remove the coin without taking out the cork or breaking the bottle?