A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

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?

What you cannot hold but it is yours?

I am a type of food that is often found in the fridge and can be white in colour. What I am?
Hint 1: I am a dairy product.
Hint 2: You can spread me on the bread.

What has many keys but can’t open a single lock?

I am beautiful, up in the sky. I am magical, yet I cannot fly. To people I bring luck, and to some people, riches. The boy at my end does whatever he wishes. What am I?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

I have no life, but I can die. What am I?

If a wheel has 54 spokes, how many spaces are there between the spokes?

I hide my treasure in the ground, my tail is big and fluffy. If you spot me in a tree, please don’t call me scruffy. What am I?