Question

Determinati intersectia multimilor A={a € N | a supra 7 supraunitara} si B={b €|N*/12 supra b subunitara}

Answer 1

a/7 supraunitara=> numaratorul >numitorul 7
a>7 A={8,9,...}
b/12 subunitara =>b<12
B={1,2,...}