You have a 12 liters jug full of water. You have two empty 8 liters and 5 liters jug. How can you divide the water into two equal parts using these jugs?

Make a sentence consisting of three words that have the whole alphabet.

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

What is so fragile that saying its name breaks it?

Manish and Manoj play 5 games of chess.
Both Manish and Manoj win the exact same number of games. There is no tie at all.

How?

using four eights (8) and a one (1) and one mathematical symbol , create the number 100

I shave every day, but my beard stays the same. What am I?

John has played 50 ODI's and his average is 50. How many runs should he score in his 51st ODI, so that his average score jumps to 51?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?