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

Two friends were stuck in a cottage. They had nothing to do and thus they started playing cards. Suddenly the power went off and Friend 1 inverted the position of 15 cards in the normal deck of 52 cards and shuffled it. Now he asked Friend 2 to divide the cards into two piles (need not be equal) with equal number of cards facing up. The room was quite dark and Friend 2 could not see the cards. He thinks for a while and then divides the cards in two piles.

On checking, the count of cards facing up is same in both the piles. How could Friend 2 have done it ?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

A sundial has the fewest moving parts of any timepiece. Which has the most?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

When can we add 2 to 11 and get 1 as the correct answer?

Joseph buys three kinds of chocolates for 100 rupees. The first one is priced at 5 rupees, second one at 3 rupees and third one at 0.5 rupees.

If he bought 100 chocolates in total, how many pieces do you think he bought each chocolate?

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?