How is a fly different from a mosquito?

Can you divide the below-given shape into four equal and identical pieces?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

A train full of passengers goes through a tunnel. When the train comes out from the other end, there is no single person on the train.

How did it happen?

1. What does:
TIM JOB
represent?

2. What does:
MO_ _
represent?

With pointed fangs I sit and wait; with piercing force I crunch out fate; grabbing victims, proclaiming might; physically joining with a single bite. What am I?

Which alphabet letter is a question?

Can you solve the below geography rebus by decoding the below rebus ?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

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?