Question

if B={4,8,12,16,20} , C={2,4,6,8,10,12,14,16} , D={5,10,15,20} .find (B-C) and (C-D)​

Answer 1

$Given \: B = \{ 4,8,12,16,20\} , \\C = \{ 2,4,6,8,10,12,14,16\} \: and \\D = \{ 5,10,15,20 \}$

$i ) \blue{ B - C } \\= \{ 4,8,12,16,20\} - \{ 2,4,6,8,10,12,14,16\}\\= \{ 20 \}$

$ii) \pink { C - D } \\= \{ 2,4,6,8,10,12,14,16\} - \{ 5,10,15,20 \}$

$= \{ 2,4,6,8,12,14,16 \}$

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