Math, asked by bharthijain54321, 2 months ago

let A and B be two sets that, n(A)=45, n (B)-38 and
(AUB) = 70. Find
N(AUB)
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Answers

Answered by nxtlegend12
2

Answer:

n(A) = 45, n(B) = 38 and n(A∪ B) = 70

(i) We know that,

n(A ∩ B) = n(A) + M(B) – n(A ∪B)

n(A ∩ B) = 45 + 38 – 70 = 83 – 70 = 13

(ii) We know that,

n(A-B) = n(A ∪B) - n(B)

n(A – B) = 70 – 38 = 32

(iii) We know that,

n(B – A) = n(A ∪ B) – n(A)

n(B – A) = 70 – 45 = 25

Answered by Anonymous
1

n(A U B) = n(A) + n(B) - n(A ∩ B)

n(A U B) = 45 + 38 - 70

n(A U B) = 83 - 70

n(A U B) = 13

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