Which is heavier: a ton of bricks or a ton of feathers?

What can you deduce from the following BrainBat?

CRY
LMKI

A man looks at a painting in a museum and says, “Brothers and sisters I have none, but that man’s father is my father’s son.” Who is in the painting?

The host of a game show offers the guest a choice of three doors. Behind one is an 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?

What has a ring but no finger?

How many times can you subtract the number 5 from 25?

Can you find the missing piece of the Porsche?

Move four matchsticks to the below square to form three squares?

what does the below rebus mean?

You are on a Boat in the mid of a river. You have two cigarettes with you. One of these two you have to light, how will you light the cigarette?