I have an eye but still cannot see.

Who am I?

I can be cracked, made, told, and played. What am I?

I’m tall when I’m young, and I’m short when I’m old. What am I?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

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

I look at you, you look at me, I raise my right, you raise your left. What am I?

I can write cow in 13 letters.

Can You?

Living above a star, I do not burn
Eleven friends and they do not turn
I can just be visited in a sequence, not once or repeatedly
PQRS are my initials
Can you tell my name accurately?

It spends most of its day eating white, but when it’s quick enough, it gets to eat fruit and sometimes some blue things. It’s in a dark room, where the walls are blue, it runs from a ghost that roams the halls and haunts it all the time. What is it?

Manish has to secure 40% marks to pass his B.tech final exams.
He got just 40 marks and failed by 40-marks.

What is the maximum marks?