Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

What occurs twice in a week, once in a year but never in a day?

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

What Time Should the last watch show in the below figure?

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

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

A newspaper is supposed to have 60 pages.Pages 14 and 21 are missing from the newspaper.

Can you tell me , Which other pages won't be there as well ?

What work can one never finish?

This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary, you'd think nothing was wrong with it. Actually, nothing IS wrong with it. But it is not as ordinary as you might think. If you think about it for a bit, you will find out why it is truly so unusual. So what is it? What is so unordinary about this paragraph?

No matter how little or how much you use me, you change me every month. What am I?