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

Astrology starts with the alphabet A, Biology starts with B, Psychology with P and Limnology with L.

Can you find an "ology" that begins with a P?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

You can see it everyday, But cannot touch it at will. What is it?

What has one eye, but can’t see?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

Replace the question mark with the correct number in the below-given picture?

Six people park their car in an underground parking of a store. The store has six floors in all. Each one of them goes to a different floor. Simon stays in the lift for the longest. Sia gets out before Peter but after Tracy. The first one to get out is Harold. Debra leaves after Tracy who gets out on the third floor.

Can you find out who leaves the lift on which floor?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

In the image given, you can find several triangles. Can you count them all?