9514 1404 393
Answer:
- 4: {8, 12, 16, 24}
- 7: {7, 42, 49}
- neither: {6, 11, 17}
Explanation:
Looking at the numbers individually, we have ...
16 = 4×4
42 = 2×3×7
6 = 2×3
17 = 1×17 (prime)
12 = 3×4
49 = 7×7
24 = 2×3×4
7 = 1×7 (prime, a multiple of 7)
11 = 1×11 (prime)
8 = 2×4
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Multiples of 4:
16, 12, 24, 8
Multiples of 7:
42, 49, 7
Multiples of neither:
6, 17, 11