Can you write down eight eights so that they add up to one thousand?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

I add 5 to 9 and get 2. The answer is correct, so what am I?

During which month do people sleep the least?

How can you make number one disappear by adding something to it?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

What makes this number unique: 8,549,176,320?

There are two dice with empty faces in front of you and a marker. You can mark any number on each of the faces of the two dice, but you have to display all 31 days of the month using the two of them.

Which numbers will you mark on which dice so that you can easily depict all the dates of the month?

A farmer went to a market and bought a wolf, a goat, and a cabbage. On his way home, the farmer came to the bank of a river and rented a boat. But crossing the river by boat, the farmer could carry only himself and a single one of his purchases: the wolf, the goat, or the cabbage. If left unattended together, the wolf would eat the goat, or the goat would eat the cabbage. The farmer’s challenge was to carry himself and his purchases to the far bank of the river, leaving each purchase intact. How did he do it?

In a rainy season, one day 3 huge ladies walked under a normal-sized umbrella.
The umbrella is not huge enough to accommodate all 3 ladies yet not a single lady got wet. Why?