John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

What has no start, end, or centre?

Name a key which is hardest to turn.

If an earthquake is 1 point higher on the Richter Scale than another earthquake which is actually 10 times stronger, how much stronger would an earthquake be if it was just half a point higher on the Richter scale?

What is the last thing you take off before bed?

Find the next number in the series

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

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

I am the black child of a white father, a wingless bird, flying even to the clouds of heaven. I give birth to tears of mourning in pupils that meet me, even though there is no cause for grief, and at once on my birth, I am dissolved into air. What am I?

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

What does this Rebus Picture means ?