ENEMY = 2 * LINK
LINK + 2 = HELL

Then what will be TAXI + HELL? Select from the options below:
a) ROTTEN
b) DANGER
c) HEAVEN
4) MORTAL

Assume there are approximately 5,000,000,000 (5 billion) people on Earth. What would you estimate to be the result, if you multiply together the number of fingers on every person's left hand? (For the purposes of this exercise, thumbs count as fingers, for five fingers per hand.) If you cannot estimate the number then try to guess how long the number would be.

Which is the correct shadow of the bird?

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

How can you tell a raw egg from a hard-boiled egg?

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

What English word has three consecutive double letters?

What do you get if you add 2 to 100 four times?

What does does this rebus picture means ?