What's ' pi '?
That's the ratio of the circumference of a circle to its diameter, I think.
I see. What is that ratio exactly?
It's approximately 3. 14, but the number continues forever. What's the diameter of your circle?
It's 10 centimeters, so the circumference should be 31. 4 centimeters.
Ok. My next problem is to convert 10000 british pounds into us dollars. What's the exchange rate at the moment?
According to the newspaper, the exchange rate is 1. 85 dollars to the pound.
That means that 10. 000 pounds will buy me 18. 500 dollars.
What's the next question.
Fractions. What's a quarter and an eighth? That's three-eights. Easy. The next question is ' what are prime numbers? '.
I can help you there. Those are numbers that cannot be created by multiplying two whole numbers, apart from the number itself and 1, together.
So, 1, 2 and 3 are prime numbers, but 4 isn't because 2 * 2 = 4.
Exactly. Anything else?
How many seconds in an hour? 60 seconds multiplied by 60 minutes equals 3600 seconds altogether.