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जर n (A) = 20, n (B) = 28 व n (A ∪ B) = 36 तर n (A ∩ B) = ? - Mathematics 1 - Algebra [गणित १ - बीजगणित]

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Question

जर n (A) = 20, n (B) = 28 व n (A ∪ B) = 36 तर n (A ∩ B) = ?

Sum

Solution

आपल्याकडे,

n(A) = 20, n(B) = 28 आणि n(A ∪ B) = 36

n(A ∪ B) = n(A) + n(B) - n(A ∩ B)

36 = 20 + 28 - n(A ∩ B)

36 = 48 - n(A ∩ B)

∴ n(A ∩ B) = 48 - 36

∴ n(A ∩ B ) = 12

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Chapter 1: संच - संकीर्ण प्रश्नसंग्रह 1 [Page 17]

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Balbharati Algebra (Mathematics 1) [Marathi] 9 Standard Maharashtra State Board
Chapter 1 संच
संकीर्ण प्रश्नसंग्रह 1 | Q (5) | Page 17
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