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Earn +20 ptsQ: Is 19a prime number
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How do you solve 19a 2a-4a 3a?
You don't have a number alone. Also I'll make the assumption that it is 19a+2a-4a+3a Without a number alone, it can't really be solved, unless a=0 19a+2a-4a+3a can be simplified however to 20a
Why 7 is not a prime number?
7 is a prime number!
Is 109 a prime number or a composite number?
109 is a prime number.
Is 167 a prime or composite number?
167 is a prime number.
Is 503 a prime number or a composite number?
503 is a prime number.
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