Question

B={xeN|x=2n,neN*,n<sau egal cu 5}

Answer 1

B={x∈N|x=2n,n∈N*,n<sau egal cu 5}

n=1; x=2×1; x=2
n=2; x=2×2; x=4
n=3; x=2×3; x=6
n=4; x=2×4; x=8

B= { 2; 4; 6; 8 }