Can you find out which number multiplied by itself will give the output as 12345678987654321?

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

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.

John asked Jack, "The time right now is 7 pm. Can you tell me what will be the time 23, 999, 995 hours later ?"

While Bella does not know the answer, do you ?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

A man is lying dead in a field where no one is around. His head is split open and his legs are disfigured. Near to him, there is an unopened package. No living organism can be found anywhere at the crime scene.

How did he die?

There is a brick of gold and a brick of iron in a boat (both 10-inch blocks), if they are both dropped into the water which will make the water level higher?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

I get hot but I never sweat,
I cook food but I am not a chef,
I have a door but you can't enter me,
I have a light but I am not a lamp.
Who am I?

Prove that twice of ten is the same as twice of eleven.