There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

Who always enjoys poor health?

John was piloting a plane behind a car but was never able to overtake it. Why?

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?

What word is pronounced the same if you take away four of its five letters?

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

If 21x = 79x, what is the value of x?

A man stands on one side of a river, his dog on the other. The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?

Can you find the odd number in the following five choices?

1) 482636
2) 259807
3) 865195
4) 104739
5) 391744

The more of this there is, the less you see. What is it?