First, think of the colour of clouds. Next think the colour of snow. Last, think of the colour of the moon. Now, what do cows drink?

Can you make a fire with just a single stick?

What demands an answer, but asks no questions

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

Find the missing number in the sequence below:

Guess the hidden movie name?

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

what does the below math rebus puzzle mean?

10 people came into a hotel with 9 rooms and each guest wanted his own room. The bellboy solved this problem.
He asked the tenth guest to wait for a little with the first guest in room number 1. So in the first room, there were two people. The bellboy took the third guest to room number 2, the fourth to number 3, ..., and the ninth guest to room number 8. Then he returned to room number 1 and took the tenth guest to room number 9, still vacant.
How can everybody have his own room?