Can you fill the blank with the correct number?

6 30 870 756030 _____

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

Using Only Five 5's and any mathematical operator make sum as 37

It was a dark stormy night and a couple were in a car driving madly to a city. The car broke down and the husband had to go get help from someone who spoke his language. He was afraid to leave his wife alone in the car so he locked the car before leaving. When he came back, the car was in the same state as he had left it but his wife was dead, there was blood on the floor and there was a stranger in the car. What happened?

What came first, the chicken or the egg?

I come in different shapes and sizes.
Parts of me are curved, other parts are straight.
You can put me anywhere you like,
but there is only one right place for me.
What am I?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

If,

A = 1

B = 2

C = 3

...

...

Z = 26.

Based on above rule, you need to find an eleven letter word whose letter sum is equal to 52.

What animal walks on four legs in the morning, two legs during the day, and three legs in the evening?

Oedipus, the king of Thebes, figured out the answer to the riddle:

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?