The more of this there is, the less you see. What is it?

Replace the question mark with the correct number below.

Two men play a dice game involving roll of two standard dice. Man X says that a 12 will be rolled first. Man Y says that two consecutive 7s will be rolled first. The men keep rolling until one of them wins.

What is the probability that X will win ?

Why do you find that most of the buildings are deprived of the 13th floor?

What is so fragile that saying its name breaks it?

What is the fastest way to double your money?

You see me once in June, twice in November, and not at all in May. What am I?

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 ?

In which direction should the missing arrow point?

At my favorite fruit stand,
an orange costs 18,
a pineapple costs 27,
and a grape costs 15.
Using the same logic, can you tell how much a mango costs?