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If A = a, b, ...

Question

If A = { a, b, c, d, e}, B = { c, d, e, f }, C = {b, d}, D = { a, e}
then the following statement is true or false?
$D \subseteq B$

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Solution

Since, $a ϵ D$ but $a / ϵ B$
So, $D \subseteq B$ is false.

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