Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

Imagine you are in a room with no windows or doors. How will you get out?

It can't be seen, can't be felt, can't be heard, and can't be smelt.
It lies behind stars and under hills, And empty holes it fills.
It comes first and follows after, Ends life, and kills laughter.
What is it?

It belongs to you, but other people use it more than you do. What is it?

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

While house hunting in London, I came across a very good leasehold property Discussing the lease the landlady told me:

'The property was originally on a 99 years lease and two-thirds of the time passed is equal to four-fifths of the time to come. Now work it out for yourself and see how many years are to go!

Why is it against the law for a man living in Delhi to be buried in Mumbai?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?