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

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

A gardener planted the Lemon trees in a mathematical ordered way (i.e. he planted a tree in rows).
He created a total of 19 rows of trees.

Note: There should be more than 2 trees to count as a row.

What is the minimum number of trees required by the gardener to have 19 rows of trees?

I have an apple tree , number of apple in this tree get doubles every week.

On 30th week , the tree gets completely filled with apples :-)



Can you tell me , on what week does my tree is half covered with apples ?

How many minutes are there in Feb 2017?

Note: The shortest answer is the correct answer.

Two-person want to cross a river. Only one boat is present on the riverside that can carry only one person at a time.

However, they still manage to cross the river. How is it possible?

In front of you, there are 9 coins. They all look absolutely identical, but one of the coins is fake. However, you know that the fake coin is lighter than the rest, and in front of you is a balance scale. What is the least number of weightings you can use to find the counterfeit coin?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

What am I?