What occurs twice in a week, once in a year but never in a day?

Can you find out the next digit in the following series ?

0, 0, 1, 3, 2, 6, 3, 9, 4, 12, 5, ?

What has 13 hearts but no other organs?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

You are in a land where thirty men and two women were dressed in classic black and white dresses.
They begin to fight as soon as any of them move.

Where are you?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

You have 1023 apples and 10 bags. You have to distribute these apples in these 10 bags in any way you choose. But when I ask for a certain number of apples you have to give them in terms of bags without transferring the apples from other bags. How do you distribute the apples?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

What has a ring but no finger?