Răspuns:
Avem:
12 = 2^2 x 3
18 = 2 x 3^2
40 = 2^3 x 5
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c.m.m.m.c = 2^3 x 3^2 x 5 = 8 x 9 x 5 = 360
360 + 7 = 367 (cel mai mic nr natural ce respecta conditiile)
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367 : 12 = 30 rest 7
367 : 18 = 20 rest 7
367 : 40 = 9 rest 7
(in caz ca nu stii, 2^3 inseamna 2 la puterea a 3 a)
