What is the next number in this series?

4,12,84,3612....

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

In four steps you need to move the word 'cold' From 'warm' by replacing one alphabet at a time such that every word formed at each step is acceptable in English Dictionary.

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

Why do you find that most of the buildings are deprived of the 13th floor?

Open a Laptop which is password protected. Hint for the password is given as below:

1 mobile 3 books 2 Boards 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches

Can you make a six-letter word using the letters N, A and B ?

On 26-01-2022, Juli was murdered at her house in a city in India in the afternoon. There were three suspects in the murder and the following are the statements that were given by them:

John: I visited my village that day.
Jacob: I was out to deposit my house tax in the municipality office at that time.
Jonny: I was at a friend's place having lunch at that time.

Can you find out who is the murderer?

It begins where the time ends.
Its second is an expression of surprise.
Its third is a question.
Its fourth is urinate.
It ends with a drink.

Which country it is?