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ACT CCRS:
S 405 Exhibit knowledge of simple counting techniques
(Score range 20–23)
S 603 Apply counting techniques
(Score range 28–32)
IXL skills:
https://www.ixl.com/math/algebra-2/counting-principle
Notes:
It's not clear which CCRS this problem is considered to meet. In my opinion, it is closer to S 405, which is a very good match for our skill.
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