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    In a group of 35 persons, 20 are young and 18 are girls. How many young girls are there in the group?
    Question

    In a group of 35 persons, 20 are young and 18 are girls. How many young girls are there in the group?

    A.

    3

    B.

    1

    C.

    2

    D.

    18

    Correct option is A

    Given:
    Total persons = 35
    Young persons = 20
    Girls = 18
    We need to find the number of young girls.
    Using the Inclusion-Exclusion Principle, we use the formula:
    Young Girls = (Young + Girls) − Total Persons
    Young Girls= 38 - 35 = 3 
    Thus, the correct option is: (a)

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