Can you calculate the probability of getting a sum of six when a dice is thrown twice?

What jumps when it walks and sits when it stands?

What is the next number in this matchsticks series riddle?

Which is faster, Heat or Cold ? Explain.

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.

Christina is older than Kareena and Karishma. Katrina is older than Karishma and younger than Kareena. If Kareena has a brother named John, who is older than Christina, who's the youngest?

What is at the end of a rainbow?

Two Twins Jack and Jill were standing back to back and suddenly they started running in opposite direction for 4 kilometres and then turn to left and run for another 3 kilometres.

what is the distance between the Baggio twins when they stop ?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?