Question

Valorile nenule ale lui n pt care 42 pe 2n+1 apartine de N sunt...

Answer 1

42/2n+1=> 2n+1|42=>2n+1€D42
2n+1€{1,2,3,6,7,14,21,42}/-2
2n€{0,1,2,5,6,13,20,41}/:2
n€{0;0,5;1;2,5;3;6,5;10;20,5}
n€N*=>n€{1,3,10}

Sper ca te-am ajutat!