1. Nov 23, 2008

marcuss

What is the base of the system in which 121 represents the same number as the decimal number 324?

I need someone to tell what this thing is saying thank you.

Last edited: Nov 23, 2008
2. Nov 23, 2008

Chaos2009

The base of the system is referring to base of the number system. i.e. base 2 is binary and base 10 is the decimal system that we usually use.

It is telling you that 324 is a decimal number so it is the normal numbers you work with, but 121 is not. You need to find what base it is in.

3. Nov 23, 2008

Staff: Mentor

If b is the base, then 121 (base b) represents 1*b^2 + 2*b + 1, which has to equal 324 (base 10).

4. Nov 23, 2008

marcuss

many thanks to both of u