What number should come in place of the question mark below?

Given that

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

Can you find out

(99)^2 =?

(Note: This is Logical, not Mathematical)

I am five letter word that is under you.
If you remove my 1st letter, then I am over you.
If you remove my 1st and 2nd letters then I am all around you.

Who am I?

Solve the equation in the image by looking at the pattern closely.

They are three errirs in this question. Can you find them?

Through your logical capabilities, can you make 7 an even?

There are 2 sand hourglasses.

The small one can measure 5 hours and the large one can measure 7 hours.

How can we measure 16 hours with 2 sand hourglasses running together ?

We know that the number 7 is the prime followed by a cube. Which next number is also a prime followed by a cube?

In particular commonwealth games, a female participant won silver and gold medals for a single event.

How can this be possible?

What does this rebus puzzle means ?