There are four 3-link chains. All you have to do is join them into a big 12-link chain. For joining two closed links, one of the links must be cut and placed onto the other link for closing.

How many minimum links will you have to cut to make the big chain?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

Why is the Hole below a Lock?

Which number should replace the question mark?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

A cat had three kittens: Snophy, Topsy and Jorden. What was the mother's name?

In a school, there are four subjects. Seventy percent of students study English, seventy five percent of students study Science, eighty five percent of students study Mathematics and eighty percent of students study Spanish.

Can you calculate the percentage of students that study all four subjects?

There is a barrel with no lid and some wine in it. 'This barrel of wine is more than half full,' said Curly. 'No it's not,' says Mo. 'It's less than half full.' Without any measuring implements and without removing any wine from the barrel, how can they easily determine who is correct?