How can a man go eight days without sleep?

While preparing the table for dinner, wife came up with an idea to tease his mathematician husband. She asked her husband to pick nine toothpicks and make ten without breaking any toothpick.

The husband was also smart and did it within seconds. How ?

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?

What has one eye, but can’t see?

What is always in front of you but can’t be seen?

If six children and two dogs were under an umbrella, how come none of them got wet?

What is black when you buy it, red when you use it, and gray when you throw it away?

I am the beginning of everything, the end of everywhere. I'm the beginning of eternity, the end of time and space. What am I?

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

I left my campsite and hiked south for 3 miles. Then I turned east and hiked for 3 miles. I then turned north and hiked for 3 miles, at which time I came upon a bear inside my tent eating my food! What colour was the bear?