Question

1. given the sets
U={1‚2‚3‚4‚5‚6‚7‚8‚9‚10}
C={2‚3‚4‚5}
D={4‚5‚6‚7}
what is C U D​

Answer 1

C={2,3,4,5}

D={4,5,6,7}

$\\ \sf\longmapsto C\cup D$

$\\ \sf\longmapsto \left\{2,3,4,5\right\}\cup \{4,5,6,7\}$

$\\ \sf\longmapsto \{2,3,4,5,6,7\}$