2 ladies and 2 girls need to cross a river in a boat big enough for 1 LADY or 2 girls. How do they do it?

I can write cow in 13 letters.

Can You?

In a university, a professor gave a set of three problems to the three brilliant students of his class. See the image for the questions.

What has many teeth, but cannot bite?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

Why did Buffon take the goal with him after every Juventus match?

If you say my name, I will no longer exist. What am I?

A mules travels the same distance daily.
I noticed that two of his legs travels 10km and the remaining two travels 12km.
Obviously two mules legs cannot be a 2km ahead of the other 2.

The mules is perfectly normal. So how come this be true ?

An ant is travelling on a 1-meter-long rope at 1 cm/second but also the entire rope is being stretched by an extra 1 meter/second. Is it possible for the ant to reach at the end of the rope?