Question

determinati cifra x pentru care numerele naturale de forma 1x sunt:
a) prime
b)compuse​

Answer 1

Răspuns:

a) prime 11, 13, 17, 19=>x={1,3,7,9}

b)compuse 10, 12, 14, 16, 18 =>x={0,2,4,6,8}