There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

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

We are a group of eight brothers. We consider the weak, yet we protect the king in every battle. If we move ahead, we never turn back. Who are we?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

What is red and smells like blue paint?

Two old friends, Jack and Jill, meet after a long time, and discussing as:

Jack: Hey, how are you, man?

Bill: Not bad, got married and I have three kids now.

Jack: That's awesome. How old are they?

Bill: The product of their ages is 72 and the sum of their ages is the same as your birth date.

Jack: Cool..But I still don't know.

Bill: My eldest kid just started taking piano lessons.

Jack: Oh, now I get it.

How old are Bill's kids?

Three men in a cafe order a meal the total cost of which is $15. They each contribute $5. The waiter takes the money to the chef who recognises the three as friends and asks the waiter to return $5 to the men.

The waiter is not only poor at mathematics but dishonest and instead of going to the trouble of splitting the $5 between the three he simply gives them $1 each and pockets the remaining $2 for himself.

Now, each of the men effectively paid $4, the total paid is therefore $12. Add the $2 in the waiters pocket and this comes to $14. Where has the other $1 gone from the original $15?

I have an eye but still cannot see.

Who am I?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?