Question Number 94676 by naka3546 last updated on 20/May/20
$${Find}\:\:{the}\:\:{supremum}\:\:{and}\:\:{infimum}\:\:{of}\:\: \\ $$$${A}\:\:=\:\:\left\{\:{n}\:\mid\:\:\mathrm{3}\:+\:\frac{\mathrm{2}}{{n}}\:\:,\:\:{n}\:\in\:\:\mathbb{R}\:\:\right\} \\ $$