Replace the question mark with the correct number in the below-given picture?

A man hijacks an aeroplane transporting both passengers(8 of them) and valuable cargo. After taking the cargo, the man demands nine parachutes, puts one of them on, and jumps, leaving the other eight behind. Why did he want eight?

Prove that the below maths equation is true.

8 + 8 = 91

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

What Deficiency does the below rebus represent?

VIT_MIN

A Detective reviewed the information they had on the case so far.

A lady named 'Caterina' was found shot and they already had a list of suspects - Ankit, Tarun, Harish, Manoj and Manish.
The killer is a fan of challenges him by leaving notes ad various places.
* The first was found in a toilet room.
* The second was found in an art room.
* The third was in a restroom.
* the fourth in an underwater room.
* The fifth at the no-smoking room.

All of the notes read the same thing, 'The clues are where you find the notes.' Yet, nothing was found at any place the notes were.
Detective the genius, immediately solved the case.
Who was the killer?

Who can jump higher than a Mountain?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.