1, 5, 7, 35, 49, 245
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The right answer is 5x5x17
1, 5, 7, 35, 49, 245
As a product of its prime factors: 5*7*7 = 245
As a product of its prime factors: 5*7*7 = 245
There are infinitely many possible answers. Select ANY number, X, greater ≥ 15.7. Let Y = 245/X. Then Y < 15.7 and so each choice of X gives a unique pair (X, Y). And, by definition, their product is 245. Since X is arbitrarily chosen from infinitely many numbers, there are infinitely many possible answers.