What is in seasons, seconds, centuries and minutes but not in decades, years or days?

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?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

How many triangles can you count in the figure given?

What has one eye, but can’t see?

In a science lab, a petri dish hosts a healthy colony of yeast for an experiment. Now every minute, all the yeast cells divide into two. At noon, there was just a single cell of yeast and at 1:22, the Petri dish was half full. Can you calculate when the dish will be full of yeast?

John was writing his first book. After saving the document, he locked his laptop with a password and mentioned some phrases for the hint box.

A friend of his tried opening his laptop but found out that it was password protected. Following is the hint that appeared.
1 mobile 3 books 2 roars 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches.

Can you help him in cracking the password?

You need to remove two matchsticks to make the below equation true. Can you do it ?