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    Marks of two students, Simi and Shally in a unit test out of 50 are given. Based on this table, which of the following statements is wrong? Subject
    Question

    Marks of two students, Simi and Shally in a unit test out of 50 are given. Based on this table, which of the following statements is wrong?

    Subject

    Marks of Simi

    Marks of Shally

    English

    30

    35

    Hindi

    45

    42

    Mathematics

    48

    50

    Science

    38

    38

    Social Science

    25

    40

    A.

    Difference of their aggregate marks is 19.

    B.

    Average of Simi's marks 37.2.

    C.

    Difference of highest-lowest marks of both are equal.

    D.

    Both have scored highest in Mathematics.

    Correct option is C

    Solution:

    Aggregate marks

    Simi = 30 + 45 + 48 + 38 + 25 = 186

    Shally = 35 + 42 + 50 + 38 + 40 = 205

    Difference = 205 − 186 = 19 → A is correct

    Average of Simi’s marks

    1865\frac{186}{5}​ = 37.2

    → B is correct

    Highest–lowest difference (Range)

    Simi: highest = 48, lowest = 25 → range = 23

    Shally: highest = 50, lowest = 35 → range = 15

    Ranges are not equal → C is wrong

    Highest score subject

    Simi’s highest = Mathematics (48)

    Shally’s highest = Mathematics (50)

    → D is correct

    Wrong statement: C

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