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

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

What is common among 11, 69, and 88?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

Can you count the number of quadrilaterals in the picture below?

The great emperor Akbar once ruled India. He was well known for his intelligence. But along with that, he was known for the Nine Gems in his court. One of the nine gems was Birbal, a quick witted and extremely intelligent man. The stories of his wit were widely popular.

Once a king ruling in a distant land heard of Birbal. To check his wit, he sent an invitation and called him to visit his land. Akbar allowed Birbal to go and he took off on the journey.

Upon reaching that kings kingdom, he was welcomed with flowers. He was then escorted to the palace of the king. Upon entering the palace, Birbal found that there were six people sitting in front of him adorning the same robe. They were also lookalike and it was hard to judge who the real king was.

After a couple of minutes, Birbal approached one of them and bowed in front of him greeting him.

That was the real king. How did Birbal know who was the real king ?

I am quite hot but become too cold if you remove the first two letters. What am I?

I have a mouth but I don't eat.
I have a bank but have no money.
I have a bed but i dont sleep.
I wave but have no hands.

Who Am I ?

It is a six-letter word.
The first four letters are me.
The second and last letters are the same.
The fourth second and last letter is payment.

Who is it?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?