Multiple Choice Questions on In an office 60 people speak English 30 speaks Hindi and 20 speaks both languages How many people sp........... for NDA Exam Preparation

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Multiple Choice Questions

In an office 60 people speak English 30 speaks Hindi and 20 speaks both languages How many people sp...........

Mathematics (NDA) Set theory
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    In an office 60 people speak English,30 speaks Hindi and 20 speaks both languages.How many people speak at least one of these two languages?

    70

    Correct Answer

    60

    Incorrect Answer

    50

    Incorrect Answer

    40

    Incorrect Answer
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    Explanation:

     n(E ? H)=n(E)+n(H)-n(E ? H)

     =60+30-20

     =70

    By: bhavesh kumar singh
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