I am white when I am dirty, and black when I am clean. What am I?

You walk into a room and see a bed. On the bed, there are two dogs, five cats, a giraffe, six cows, and a goose. There are also three doves flying above the bed. How many legs are on the floor?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

A Man gave one of his sons 10 cents and another son was given 15 cents. What time is it?
Hint: Figure out the relation between time and number, is not so easy..:)

After teaching his class all about Roman numerals (X = 10, IX=9 and so on) the teacher asked his class to draw a single continuous line and turn IX into 6. The teacher's only stipulation was that the pen could not be lifted from the paper until the line was complete.

Can you discover the missing number in this series?

37, 10, 82
29, 11, 47
96, 15, 87
42, ?, 15

Replace the question mark in the picture below.

During which month do people sleep the least?

Can you guess the name of the month by looking the below rebus ?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?