What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

I have Rs.50 and I spend it in the way as below.

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

Look at the picture and find out which square is not linked with any of the other squares.

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

I can write cow in 13 letters.

Can You?

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?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

A man is walking down a road with a basket of eggs. As he
is walking he meets someone who buys one-half of his eggs
plus one-half of an egg.
He walks a little further and meets another person who buys
one-half of his eggs plus one-half of an egg.
After proceeding further he meets another person who buys
one-half of his eggs plus one half an egg. At this point, he
has sold all of his eggs, and he never broke an egg.
How many eggs did the man have to start with?

In the given picture, in how many ways can you read the word "Tiger"?