What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

Some friends went on a vacation to a resort. It was raining heavily and it kept raining for thirteen days.

When it rained in the morning, the afternoon was beautiful and when it rained in the afternoon, the day was blessed with a clear morning.

Overall, the friends experienced eleven nice mornings and twelve nice afternoons. Can you find out the number of days they spent on vacation?

What is the next number in this matchsticks series riddle?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

Krish is 45 years old and his mother Crishtina is 73 years old.

Can you find out how many years ago, his mother was three times his age?

Out of three Friends John, Jacob and Jonny one of them is a king, one is a bureaucrat, and one is a Spy.

The king always tells the truth, the bureaucrat always lies, and the Spy can either lie or tell the truth.

John says: Jonny is a bureaucrat
Jacob says: John is a king
Jonny says: I am a Spy

Tell me, Who is the king, who is the bureaucrat, and who is the Spy?

How many Watermelons are there in the below picture?

Complete the table series riddle by finding the number that can replace "??".

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?