Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

A donkey is behind another donkey
I'm behind that second donkey
But there is a whole nation behind me

It is a murder you can describe in a word.

It spends most of its day eating white, but when it’s quick enough, it gets to eat fruit and sometimes some blue things. It’s in a dark room, where the walls are blue, it runs from a ghost that roams the halls and haunts it all the time. What is it?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

Can you make four (4) nines (9) equal 100?

Find the next number in the sequence

5 12 24 36 ?

What is the unique property of the following words ?
* Revive
* Banana
* Grammar
* Voodoo
* Assess
* Potato
* Dresser
* Uneven

A bag contains 64 balls of eight different colours. There are eight of each colour (including red). What is the least number you would have to pick, without looking, to be sure of selecting 3 red balls?

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