100 prisoners are stuck in the prison in solitary cells. The warden of the prison got bored one day and offered them a challenge. He will put one prisoner per day, selected at random (a prisoner can be selected more than once), into a special room with a light bulb and a switch which controls the bulb. No other prisoners can see or control the light bulb. The prisoner in the special room can either turn on the bulb, turn off the bulb or do nothing. On any day, the prisoners can stop this process and say "Every prisoner has been in the special room at least once". If that happens to be true, all the prisoners will be set free. If it is false, then all the prisoners will be executed. The prisoners are given some time to discuss and figure out a solution. How do they ensure they all go free?

The peacock is a bird that does not lay eggs. How do they get baby peacocks?

I welcome the day with a show of light, I stealthily came here in the night. I bathe the earthy stuff at dawn, But by noon, alas! I'm gone.

An artist while painting a scenic beauty, decides to paint three layers of blue colour on the sky.

Which layer will go on the first?

What has a bottom at the top?

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

Can you name four days which start with the letter 'T'?

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

If 1+9+8=1, what is 2+8+9?

A cat had three kittens: Snophy, Topsy and Jorden. What was the mother's name?