Can you replace the question mark with the correct letter?

6 + 6 + 6 = N
7 + 7 + 7 = E
8 + 8 + 8 = R
0 + 0 + 0 = ?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

To tease, King Akbar told his most clever advisor Birbal to give his daughter one thing that she can eat when hungry, drink if she feels thirsty and can burn if she feels cold. King Akbar was shocked when Birbal gave Akbar's daughter one such thing that satisfies all of the above.

What did Birbal give to Akbar's daughter?

A man embarked on a questionnaire game. He kept asking the same question to whomever he found. The answer each time was different.

Can you guess what the question was?

It's pretty hard to give up.
If you remove a part of it, you will be left with a bit.
Even if you remove another part, the bit still remains.
Remove one more and it still remains.

What is it?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

What Adam and Eve do not have but the rest of the people have?

What is the last thing you take off before bed?

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?

I have branches, but no fruit, trunk or leaves. What am I?