What number comes next in the series?

5 15 5 18 5 24 14 20 _

In a stable, there are men and horses. In all, there are 22 heads and 72 feet. How many men and how many horses are in the stable

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?

Replace the question mark with the correct number in below Picture:

The more you take me, the more you leave me behind.
Who Am I?

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

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?

A doctor and a boy were fishing. The boy was the doctor’s son, but the doctor was not the boy’s father. Who was the doctor?

Which word does the below Plexor means ?