Răspuns:
a) Primii 7 multipli a nr 2: 0, 4, 6, 8, 10, 12, 14
Primii 7 multipli a nr 3: 0, 6, 9, 12, 15, 18, 21
Primii 7 multipli a nr 4: 0, 8, 12, 16, 20, 24, 28
=> Multiplii comuni: 0, 12.
b) Primii 7 multipli a nr 3: 0, 6, 9, 12, 15, 18, 21
Primii 7 multipli a nr 4: 0, 8, 12, 16, 20, 24, 28
Primii 7 multipli a nr 6: 0, 12, 18, 24, 30, 36, 42
=> Multiplii comuni: 0, 12.
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