Can you find out the missing number in the grid?

Why is the longest human nose just 11 inches?

What's a single-digit number with no value?

How can one talk without saying a single word?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

Two friends were stuck in a cottage. They had nothing to do and thus they started playing cards. Suddenly the power went off and Friend 1 inverted the position of 15 cards in the normal deck of 52 cards and shuffled it. Now he asked Friend 2 to divide the cards into two piles (need not be equal) with equal number of cards facing up. The room was quite dark and Friend 2 could not see the cards. He thinks for a while and then divides the cards in two piles.

On checking, the count of cards facing up is same in both the piles. How could Friend 2 have done it ?

How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?

I have an eye but still cannot see.

Who am I?

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.