Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

Find the next number in the sequence

5 12 24 36 ?

What number comes next in the series?

5 15 5 18 5 24 14 20 _

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

A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log.

Can you calculate the weight of the entire wooden log?

Which letter of the alphabet has the most water?

Guess the hidden movie name?

In a science lab, a petri dish hosts a healthy colony of yeast for an experiment. Now every minute, all the yeast cells divide into two. At noon, there was just a single cell of yeast and at 1:22, the Petri dish was half full. Can you calculate when the dish will be full of yeast?

On a special event at the prison, 5 prisoners John, Jacob, Krist, Tang, and Dang given a chance to go to a sauna and can bring one thing with them.

Following are the things that the prisoners bring with them.
John: A soda
Jacob: Thermos
Krist: Book named "How to kill"
Tang: A Walkman
Dang: Harmonica

Since it is a Sauna, no one can see each other. After a while When the steam is switched, Tang was found dead and there was blood all around.
J Bond was called and he instantly come to know who can be the murderer. How?

You need to arrange three 7 and mathematical symbols to form number 1?