Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

I am a type of room you cannot enter or leave. Raised from the ground below, I could be poisonous or a delicious treat. What am I?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

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?

Can you count the number of lines in the below picture?

What is the longest word in the dictionary?

At a Society election for president, precisely 963 votes were cast.
There is a total of 4 candidates that participate in the election.

The winning candidate exceeds the opponents by 53, 79 and 105 votes.

How many votes do each candidate gets?

Remove two matchsticks to make the below equation correct.

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

In a stable, there are men and horses. In all, there are 22 heads and 72 feet. How many men and how many horses are in the stable