What has lots of eyes, but can’t see?

Given that

(78)^9 = 6
And (69)^4 = 11

Can you find out

(99)^2 =?

(Note: This is Logical, not Mathematical)

We are a group of eight brothers. We consider the weak, yet we protect the king in every battle. If we move ahead, we never turn back. Who are we?

Below rebus represent famous DiCaprio movie. Can you name it?

Find a 9-digit number, which you will gradually round off starting with units, then tenth, hundred etc., until you get to the last numeral, which you do not round off. The rounding alternates (up, down, up ...). After rounding off 8 times, the final number is 500000000. The original number is commensurable by 6 and 7, all the numbers from 1 to 9 are used, and after rounding four times the sum of the not rounded numerals equals 24.

A person was found dead on a big green land with no trees or buildings around. When the police arrived, they found a piece of rock lying next to him and the man was wearing clothes comprising of red, blue and yellow colours.

Can you tell who the person is and what was the cause of death?

Identify Me

Hint1: I am a god
Hint 2: I am a planet
Hint 3: measurer of heat

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

Name a key which is hardest to turn.

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