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

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

A boy and a girl are sitting on the porch.
"I'm a boy," says the child with black hair.
"I'm a girl," says the child with red hair.
If at least one of them is lying, who is which?

A train full of passengers goes through a tunnel. When the train comes out from the other end, there is no single person on the train.

How did it happen?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

An octopus has 8 legs. A hippogriff has 6 legs and 2 pairs of wings. A sphinx has 6 legs and one pair of wings. Now we have all 3 kinds and a total of 18 insects in a cage. We have a total of 118 legs and 20 pairs of wings. How many insects do we have of each kind?

In particular commonwealth games, a female participant won silver and gold medals for a single event.

How can this be possible?

What can go through glass without breaking it?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

The doctor advised his patient to take a tablet after every fifteen minutes. He gave him five tablets in total.

How much time will he take to have all the five tablets?