Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

Two men play a dice game involving roll of two standard dice. Man X says that a 12 will be rolled first. Man Y says that two consecutive 7s will be rolled first. The men keep rolling until one of them wins.

What is the probability that X will win ?

Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

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

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.

In an interview, a boy was asked an unusual question 'How two persons sitting with a table in between them can't see each other?' He was unable to reply. Can you?

What number divided by 4 is the same as that number minus 4?

Why despite killing dozens of people Charley and Wilma were not punished?