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22 votes
22 votes
Rob says all numbers have an even number of factors. Enrique says some numbers have an odd number of factors. Who is correct?

User Zagonine
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1 Answer

5 votes
5 votes

Answer:

Enrique

Explanation:

9 has the factors 1, 3 and 9. That is an odd number of factors (3).

User Siusiulala
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