what does this below rebus represent identXQQQQQME

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

Intelligence Agency need to break the vault but the problem is that they are not able to break the vault.

On the vault, a text is written as:

31 11 33 33 43 45
21 25
31 24 11 31 51 41

To Break the code Intelligence Agency brings a mathematician named Joseph.
Minutes later he deciphers the code.

Whats the code?

What Time Should the last watch show in the below figure?

Mr Red Lives in the red house.
Mr Green Lives in the greenhouse.
Mr Yellow Lives in the yellow house.

Who lives in the Whitehouse?

Who is that with a neck and no head, two arms and no hands? What is it?

While preparing the table for dinner, wife came up with an idea to tease his mathematician husband. She asked her husband to pick nine toothpicks and make ten without breaking any toothpick.

The husband was also smart and did it within seconds. How ?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

What does this rebus riddle means ?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?