2

4 days
Day 1: 2 -1 = 1
Day 2: 1 +2 -1 = 2
Day 3: 2 + 2 - 1 = 3
Day 4: 3 +2 = 5.

Because he is still living,

87. It is the nearest to 5 because there is only a '?' and a space in between 5 and 87.

C
The digits add up to 19. In all the others the total is 18.

The answer is 3.

Treat

One of average intelligence finds three of them. If you spotted four, you're above average. If you got five, you can turn your nose at most anybody. If you caught six, you are a genius. There is no catch. Many people forget the "of"s. The human brain tends to see them as V's and not F's.

4600

12 = 552/x * 100 x= 552/12 * 100 = 4600

Three: A blonde, a brunette and a redhead.

The rope wasn't tied to anything.

A penguin