Can you decipher the following common phrase?

T M C
A U O
H S M
W T E

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

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

There are a hundred statements.

First person says: At least one of the statements is false.

Second person says: At least two of the statements is false.

Third person says: At least three of the statements are false.

Fourth person says: At least four of the statements are false.

..

..

..

Hundredth person says: At least a hundred of the statements are false.

Analysing it, how many statements do you think are false and how many are true?

Count the number of triangles in the given picture.

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

What runs around the whole yard without moving?

I am Huge on Sunday and Saturday.
I am small from Tuesday to Thursday.
I do not exist on Monday and Friday.
Who am I?

I am green and found in the forest and have needles instead of leaves. What am I?
Hint 1: It can be used for Christmas decorations.
Hint 2: I have a strong, scent that is used in air fresheners.