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If f and g are integers, is fg + 2 prime? (1) f is odd. (2)

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Source: — Data Sufficiency |

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by Ian Stewart » Sat Aug 17, 2019 5:19 am

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Using both Statements, if g = 0, then fg+2 = 2, and it's prime, but if g is any other even integer, fg+2 will be even and will not equal 2, so will not be prime. So the answer is E.
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