Question

sa se determine numarul de permutari ale multimilor:
a) A= {x∈ N ,24/x+1 ∈ N }
b)A={x∈ Z,x+14/x∈Z}
c)A={n∈N,2n+1 DIVIDE 21}

Answer 1

3.A={1,3,}

2.A={1,2,3,4,5,6,7.....}

1.A={1,2,3,4,5,6,7....}