On my way to St. Ives I saw a man with 7 wives. Each wife had 7 sacks. Each sack had 7 cats. Each cat had 7 kittens. Kittens, cats, sacks, wives. How many were going to St. Ives?

Solve the following series:
AZ, GT, MN, __, YB

What do you get if you add 2 to 100 four times?

What is at the end of a rainbow?

When is the top of a mountain similar to a savings account?

I have four wings but can't fly.
I express no emotions.
I am found on the exact spot every time you look.
I keep toiling away with a little sound.

Do you know what am I?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?