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If n (A)=10, n(B)=21 and n(A nn B)=5, th...

If `n (A)=10, n(B)=21` and `n(A nn B)=5`, then find `n(A uu B)`.

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To solve the problem, we need to find the number of elements in the union of sets A and B, denoted as \( n(A \cup B) \). We will use the formula for the union of two sets: \[ n(A \cup B) = n(A) + n(B) - n(A \cap B) \] ### Step-by-step Solution: ...
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