Răspunsuri

2014-10-07T18:34:53+03:00
N=5q+4  n-4 =5q   q = (n-4)/5 < 6    n-4 < 30     (n-4) divizibil cu  5   ⇒        (n-4)∈{5,10,15,20,25} ⇒ n∈{9,14,19,24,29}
2 3 2