Can you find the key in the picture below?

Can you find a seven digit number which describes itself. The first digit is the number of zeros in the number. The second digit is the number of ones in the number, etc. For example, in the number 21200, there are 2 zeros, 1 one, 2 twos, 0 threes and 0 fours.

Solve the following series:
AZ, GT, MN, __, YB

What can go through glass without breaking it?

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?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

You need to pick one entry from pot A and one from pot B to have a perfect match. Can you do it?

Which wheel of car does not rotate when you turn your car right?