It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

Find the next number in the following series:
6, 14, 26, 98, __?

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.

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

Look at the below sequence of letters and tell us what the next letter should be:

O T T F F S S ?

Can you solve the below rebus?

There is something which is always coming but never arrives?

You have a basket containing ten apples. You have ten friends, who each desire an apple. You give each of your friends one apple.
Now all your friends have one apple each, yet there is an apple remaining in the basket.
How?

There was a minor accident with a doctor's son but the doctor noticed no major injury. After the treatment, the father of that doctors son is sitting with the son of the doctor without the doctor being in the room.

How can this be possible?