Homework Help: math

Posted by sai on Thursday, August 5, 2010 at 1:36am.

Cruz and his friend, Penny need to determine what numbers are prime and what numbers are composite for homework assignment. Cruz says that the number 5 is a composite number because it has the factors 2 and 2.5. Explain what is wrong with his reasoning

math - drwls, Thursday, August 5, 2010 at 8:14am
Composite numbers are th products of integers other than one.

2.5 is not an integer.

Integers are whole numbers.

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