Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

What is the next shape from answers A, B, C, and D figure?

You need to arrange three 7 and mathematical symbols to form number 1?

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

Today is John's birthday.
A year ago, John had five candles and he lit all the candles except the one at the last.
Now he is going to light all the candles.

How old is John Today?

(He is not five today.....)

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

A number with an interesting property:

When I divide it by 2, the remainder is 1.
When I divide it by 3, the remainder is 2.
When I divide it by 4, the remainder is 3.
When I divide it by 5, the remainder is 4.
When I divide it by 6, the remainder is 5.
When I divide it by 7, the remainder is 6.
When I divide it by 8, the remainder is 7.
When I divide it by 9, the remainder is 8.
When I divide it by 10, the remainder is 9.

It's not a small number, but it's not really big, either.
When I looked for a smaller number with this property I couldn't find one.

Can you find it?

In a boat, the father of a sailor's son is sitting with the son of the sailor. However, the sailor is not present on the boat.

Can this even be possible?

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