I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

Prove that the below maths equation is true.

8 + 8 = 91

No one wants to have it, but if one got it, he does not want to lose it. What is It?

How can you take 2 from 5 and leave 4?

What do you think with the below Picture ?

Two friends were betting. One said to the other, "The coin will be flipped twenty times and each time the coin lands on the head, I will give you $2 and each time it lands on the tale, you will give me $3." After flipping the coin twenty times not a single penny was exchanged among them.

How many times did the coin land on heads?

Guess the hidden movie name?

Can you solve this picture maths equation?

I am an eight letter word and I am a computer terminology.
The second, third and fourth letters make an animal.
The fourth, fifth, sixth, seventh and eighth letters make a weapon.
The first, second, third and fourth letters can be taken as an outcome of any exam.
The fifth, sixth, seventh and eighth letter combine to form a high end typing software.

Can you tell who am I ?

Given that

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

Can you find out

(99)^2 =?

(Note: This is Logical, not Mathematical)