Homework Help: algebra

Posted by PRIDE on Wednesday, February 27, 2008 at 7:22pm.

The positive integer 4 can be represented as a sum of 1's or 2's in
five ways, such as 1 + 2 + 1 and 1 + 1 + 2. Show all the ways that
the positive integer 5 can be represented as a sum of 1's or 2's.

algebra - drwls, Thursday, February 28, 2008 at 2:08am
1 + 2 + 2
2 + 1 + 2
2 + 2 + 1
1 + 1 + 3
1 + 3 + 1
3 + 1 + 1

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