There is a brick of gold and a brick of iron in a boat (both 10-inch blocks), if they are both dropped into the water which will make the water level higher?

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?

Count the squares in the matchstick puzzle below?

When monkey rotate the gear, which mark will be hit 1 or 2 ?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

I have an eye but still cannot see.

Who am I?

Can it be possible to build a house that has all its four walls facing towards the South?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

Can you find out who is the kidnapper in below Picture and why, Explain ?

Why 1729 is a magic number? Answer Logically.