Buy me, smell me or deliver me, I do not change.

Who am I?

who is silent in the parliament?

Every words stands for unique digit that makes the arithmetic equation true

SEVEN + SEVEN + SIX = TWENTY.

What are the digits ?

Can you find a seven digit number which describes itself. The first digit is the number of zeros in the number. The second digit is the number of ones in the number, etc. For example, in the number 21200, there are 2 zeros, 1 one, 2 twos, 0 threes and 0 fours.

Can you name an animal whose killing cannot be performed without spilling your own blood?

A man stands on one side of a river, his dog on the other. The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?

Move three sticks of the spiral below to form a square.

Use the numbers 2, 3, 4 and 5 and the symbols + and = to make a true equation. Conditions: Each must be used exactly once and no other numbers or symbols can be used.

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

A plane crashed between the border of Mexico and America. Where do you bury the survivors?