I know there are two methods by using three time the same number with a plus(+) operator , you can make sum as 60.

One of them is 20+20+20.

whats the other way ?

The host of a game show, offers the guest a choice of three doors. Behind one is a expensive car, but behind the other two are goats.
After you have chosen one door, he reveals one of the other two doors behind which is a goat (he wouldn't reveal a car).

Now he gives you the chance to switch to the other unrevealed door or stay at your initial choice. You will then get what is behind that door.

You cannot hear the goats from behind the doors, or in any way know which door has the prize.

Should you stay, or switch, or doesn't it matter?

Rearrange the letters in "new door" to make one word.

There is something which you can be arrested for attempting but not for successfully completing.

Next Number in the Series,

5, 16, 49, 104, ?

In a science lab, a petri dish hosts a healthy colony of yeast for an experiment. Now every minute, all the yeast cells divide into two. At noon, there was just a single cell of yeast and at 1:22, the Petri dish was half full. Can you calculate when the dish will be full of yeast?

Find the next number in the following series:
6, 14, 26, 98, __?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

If 24H in a D => 24 hours in a day.
What does "64S on CB" stand for?

Who is generally closer to the kids, mom or dad?

(it's a funny riddle)