Prime factors of 42 are: 2, 3 and 7
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4: 2, 3, 5 and 7. 1 is not a prime.
42
How many two digit number are divisible by 5
6 x 7 = 42 (it helps to know the multiplication tables), so the prime factors are 2 x 3 x 7, and the combination is 237
Yes