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    Question

    निम्नलिखित जानकारी

    को पढ़िए और नीचे दिए गए प्रश्नों के उत्तर दीजिए। A में 28 तत्व हैं, B में 32 तत्व हैं और A Ս B में 40 तत्व हैं।How many elements are present only in B?
    A 28 Correct Answer Incorrect Answer
    B 18 Correct Answer Incorrect Answer
    C 12 Correct Answer Incorrect Answer
    D 10 Correct Answer Incorrect Answer

    Solution

    Elements are present only in B = n (B) - n (A Ո B) = 32 – 20 = 12

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