Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

A boy was locked in a room by some robbers. All that is in the room is a piano, a calendar, and a bed. The room is locked from the outside. What does he eat, drink, and how does he escape and get out?

Arrange the numbers 1, 2, 3, 4, 5, 6, 7, 8 and 9 above and below the division line in a manner that the thus formed fractions equal to 1/3.

(You can use one number only once)

I am green and found in the forest and have needles instead of leaves. What am I?
Hint 1: It can be used for Christmas decorations.
Hint 2: I have a strong, scent that is used in air fresheners.

What is both possible and impossible at the same time?

A king sentenced a man to the death sentence for some crime he had committed. Known for his kindness, the king told the culprit that he had a choice to die in a way he decides.

The culprit was clever and said something that saved him from death. What method do you think he must have chosen for his death?