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

I am the largest in my family of fifty.
The youngest of our family lives separately from the rest of the family and so do I.
I am regarded as harsh and tough.
I am so large, you cut me in two equal halves,
each half would still be larger than the second largest member of the family.
Who am I?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

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?

The Judge knows that Alamgir was killed by his girlfriend Jasline, but the judge is unsure whether to punish her. Why?

What country can make you shiver?

Identify the movie name through below Rebus containing Pi Mouse and coconut tree..

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?