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Question

If $A \subset B, n (A) = 6, n (B) = 10$ then value of $n (B - A)$ is

A

2

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B

4

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C

6

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D

8

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Solution

The correct option is B $4$
Given $A \subset B, n (A) = 6, n (B) = 10$
As $A \subset B$
$n (B - A) = n (B) - n (A) = 10 - 6 = 4$

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