What is in seasons, seconds, centuries and minutes but not in decades, years or days?

In a university, a professor gave a set of three problems to the three brilliant students of his class. See the image for the questions.

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

Can you name three consecutive days without using the words Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday?

Find the next number in the series below.

6 18 270 72090 ?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

Find three numbers such that When we multiply three numbers, we will get the prime numbers. The difference between the second and the first number is equal to the third and second.

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

John was driving a bus and got stuck when passing through an underpass. Then came Jacob with a needle and got the bus out of the underpass.

What did the boy do?

We can be boring,Or interesting.
We can be long,Or short.
We can have pictures,Or just words.
Many love us,But many also hate us.
What are we?