Question 14276
to be honest i would disagree with both your methods :-) However, neither method is wrong i think.


Remember, you are looking for primes: 2,3,5,7,11,... etc So, use those.


I would do the following:

36
2x18
2x2x9
2x2x3x3


Can you see what i did?...i start with the number and ask myself is it divisible by 2?. I write those factors down.


I then look at the 18...is it divisble by 2? If so, write it down --> 2x9. Etc etc just build it up that way.


eg 120
2x60
2x2x30
2x2x2x15
2x2x2x3x5


see?


jon.