An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

I am a type of vehicle that has two wheels and is powered by humans. What am I?
Hint 1: You can ride me for exercise.
Hint 2: I am environment-friendly.

What is red and smells like blue paint?

Can you count the number of lines in the below picture?

If,

A + B = C
D - C = A
E - B = C

Based on the above equations, find out the answer for:

D + F = ?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

It is always ahead of me yet I can never see it. What is it?

There is something which is always coming but never arrives?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?