What begins with T, ends with T, and has T in it?

During which month do people sleep the least?

Using eight eights and addition only, can you make 1000?

I went to the bookshop and spent one-half of the money that was in my purse.

When I came out, I found that I had as many cents as I had dollars and half as many dollars as I had cents when I went in. Find the money in my purse when I entered the store.

I have Rs.50 and I spend it in the way as below.

There is something which is always coming but never arrives?

The doctor prescribed you to take one pill from the bottle every half an hour. The bottle is now left with only three pills.

How long do you think you have before you run out of pills?

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

Can you find the thief by just looking at the picture below?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?