The proposition is true with divisors 1, p, q and pq. Its converse (“If n has exactly 4 divisors, then it is a product of two unequal prime numbers”) is false; n = 8 = 2³ has 4 divisors. Class 9 ...
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The proposition is true with divisors 1, p, q and pq. Its converse (“If n has exactly 4 divisors, then it is a product of two unequal prime numbers”) is false; n = 8 = 2³ has 4 divisors. Class 9 ...