Find out the missing number in the picture attached:

Before Mount Everest was discovered, what was the highest mountain in the world?

What is the next number in this matchsticks series riddle?

Kohli and Dhoni decided to have a paintball match.
Kohli told Dhoni, "Sir it is not right as you got thrice the paintballs I have".

Dhoni instantly gives Kohli 10 hit paintballs.
Kohli replied, "Sir, I believe you still have twice the paintballs than I have".

Dhoni gives "?" more paintballs to Kohli.
Kohli replied, "Sir it is even now, Let us have a match".

What is "?".

Why do people go to bed?

A man fell off a smuggling boat into deep water. He could not swim and he was not wearing anything to keep him afloat. It took 30 minutes for the people on the boat to realize someone was missing. The missing man was rescued two hours later on the return trip. Why didn't he drown? Note:- He didn't know swimming, the sea was deep, and He wasn't holding anything

What is the next shape from answers A, B, C, and D figure?

What number do you get when you multiply all of the numbers on a telephone's number pad?

Which letter of the alphabet has the most water?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?