State true or false.
Let $A = {1, 2, 3}, B = {2, 4, 6, 8}, C = {3, 4, 5, 6}$ then
$n (A - B) = 2$

True

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False

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Solution

The correct option is A True
Given $A = {1, 2, 3}$ , $B = {2, 4, 6, 8}$ and $C = {3, 4, 5, 6}$

$∴ A - B = {x : x \in A a n d x \notin B}$

$∴ A - B = {1, 3}$

$∴ n (A - B) = 2$

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