Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

Can you find a five letter word that is left with only two letters if one is removed?

What has a bottom at the top?

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

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

Why do you find that most of the buildings are deprived of the 13th floor?

Find the next number in the following series:
6, 14, 26, 98, __?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

Given that

(78)^9 = 6
And (69)^4 = 11

Can you find out

(99)^2 =?

(Note: This is Logical, not Mathematical)