Question

1.Q= {n: 7 <n<31}, list the members of the set Q
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Answer 1

Q={x:x$\epsilon$n,7<n<31}

$\\ \sf\longmapsto Q=\left\{8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30\right\}$

You can write it like this too

$\\ \sf\longmapsto Q=\left\{8,9......30,31\right\}$