If in a car race, the man who came two places in front of the last man finished one ahead of the man who came fifth, how many contestants were there?

I have teeth but i don't bite. Who Am I ?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

There are 2 cops parked along a one-way street looking for traffic violations. They spot a taxi driver going in the wrong direction, yet they do nothing.

Why?

There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box?

The more of this there is, the less you see. What is it?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

Count the Triangle in the figure given below:

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

A Shopkeeper collects 71 rupees in the form of 20 paisa and 25 paisa.
He collects a total of 324 coins.

Can you tell me how many number of 20-paisa and 25-paisa he got?