Triples 67394

How many triples of sounds can be created from sounds f, o, u, r? You solve using a tree diagram.

Correct answer:

n =  20

Step-by-step explanation:

[fr][ou][fr] [fr][ou][ou] [ou][fr][ou]  n=2 2 2+2 2 1+2 2 2=20



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combinatoricsbasic operations and conceptsnumbersGrade of the word problem

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