If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?

A sundial has the fewest moving parts of any timepiece. Which has the most?

If we tie a Sheep to one peg, a circled grass is been eaten by the Sheep. If we tie the Sheep to two pegs with a circle on its neck, then an eclipse is eaten out of the grass by the Sheep. If we want an eclipse then we put two pegs and then put a rope in between them and the other end of the rope is tied up on the Sheep's neck.

How should we tie the peg and the Sheep so that a square is eaten out from the garden grass? We only have one Sheep rope and the peg and the rings.

There was a minor accident with a doctor's son but the doctor noticed no major injury. After the treatment, the father of that doctors son is sitting with the son of the doctor without the doctor being in the room.

How can this be possible?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

What is the last thing you take off before bed?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

Teacher ask the student

'Why are you standing on that chair in music class ?'.

what did student replied ?