Question

Which of the following is a subset of the set
A: {men between the ages of 20 and 30}

{men between the ages of 25 and 30}

{a 40 year old man}

{adults between the ages of 20 and 25}

{men over 30}

Answer 1

it has to be the first one because 40 is not in "A", "A" is about men, not adults, and men over 30 do not qualify to be in the set. I hope this helped