Question

Determinati elementele multimilor:
A={n € N | 47/53 < 47/n < 47/41}

B={n € N | 3/5 < n/10 < 3/2}

Answer 1

A{52,51,50,49,48,47,46,45,44,43,42}
pt că 53>n>41
pt B
aducând la același numitor 6/10<n/10<15/10
6<n<15
B={7,8,9,10,11,12,13,14}