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

They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?

A train leaves from point A for point B at 80 mph. After half an hour, another train leaves from point B for point A at 60 mph.

Which of the trains will be farther from point A when they meet ?

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

A pond had 60 fish, out of which, all but 20 died.
How many fishes are now present in that pond?

It is a nine-letter word.
The exact opposite of the phrase "friendly and outgoing"
It contains the word "over".
It starts will a vowel.

What is it?

Write the next letter in this sequence.
O, T, T, F, F, S, S, E, __
**Hint: It is a Number Series Puzzle

Your job is to measure 45 minutes if you have only two cords and matches to light the cords.

1. The two cords are twisted from various materials, so their different segments can burn at different rates.
2. Each cord burns from end to end in exactly one hour.

Describe your way of measuring the 45 minutes.

If your uncle’s sister is not your aunt, what relation is she to you?

How is a fly different from a mosquito?