What number comes next in the series?

5 15 5 18 5 24 14 20 _

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

Spot 5 differences in two Christmas tree below:

What always comes into a house through the keyhole?

Take away the whole and some still remain. What is it?

Use the digits from 1 up to 9 and make 100.

Follow the rules.
=> Each digit should be used only once.
=> You can only use addition.
=> For making a number, two single digits can be combined (for example, 4 and 2 can be combined to form 42 or 24)
=> A fraction can also be made by combining the two single digits (for example, 4 and 2 can be combined to form 4/2 or 2/4)

Question: how can we do this?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

You have four chains. Each chain has three links in it. Although it is difficult to cut the links, you wish to make a single loop with all 12 links. What is the fewest number of cuts you must make to accomplish this task?

I inserted a coin in a bottle and closed its mouth with the help of a cork. Now, I was able to take the coin out from the bottle without taking out the cork or breaking the bottle. Can you tell me how I did it?

Why is the longest human nose just 11 inches?