John buys rice at Rs.60/kg from Britain and then sells them at Rs.5/kg in India. As a result of this, he becomes a millionaire. How come?

Can you move 2 matchsticks to form four equal sized squares.

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

John and Jenni are a married couple. They have two kids, one of them is a girl. Assume safely that the probability of each gender is 1/2.
What is the probability that the other kid is also a girl?

Hint: It is not 1/2 as you would first think.

Its something that each of us devours,
Not just us but birds, beats, trees, and flowers,
Frets iron and nibbles steel,
Toil hard stones to meal,
Exterminates king, collapse town,
And blows the mountains down.

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.

I am sure no one can have two things for dinner. what are they?

Rearrange the letters in "new door" to make one word.

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

Which wheel of car does not rotate when you turn your car right?