SOLUTION: If the ones digit in a two-digit number is even,the number is a composite number. Which odd ones digit also tells you the number must be a composite number?
Algebra.Com
Question 1129513: If the ones digit in a two-digit number is even,the number is a composite number. Which odd ones digit also tells you the number must be a composite number?
Answer by ikleyn(52802) (Show Source): You can put this solution on YOUR website!
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5 (five).
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