Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

The following question it puts forth you:

25 - 55 + (85 + 65) = ?

Then, you are told that even though you might think it's wrong, the correct answer is actually 5!

Whats your reaction to it? How can this be true?

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

What is common among 11, 69, and 88?

John is asked to stand behind Jacob and Jacob is asked to stand behind John. Both of them feel confused about it and don't know what to do?

But it is quite possible, do you know how?

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

John was born on March 5, 1970, in Delhi, India. Jacob was born 25 days before John. The year when they took birth, Republic Day fell on Monday.

Can you find out on what day was Jacob born?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

As we know that white starts the game of chess. Can you find the scenario shown in the picture below is possible when all the white pieces are at the original place while the black pawn is not as in the below picture?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??