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    ​Find the value of 77715+77725+77735+77745=?\text{Find the value of }777\frac{1}{5}+777\frac{2}{5}+777\frac{3}{5}+777\frac{4}{5}=
    Question

    Find the value of 77715+77725+77735+77745=?\text{Find the value of }777\frac{1}{5}+777\frac{2}{5}+777\frac{3}{5}+777\frac{4}{5}= ?​​

    A.

    3110

    B.

    3018

    C.

    3000

    D.

    3108

    Correct option is A

    Solution:
    77715+77725+77735+77745 =777+15+777+25+777+35+777+45 =4×(777)+(15+25+35+45) =3108+2 =3110777\frac{1}{5}+777\frac{2}{5}+777\frac{3}{5}+777\frac{4}{5}\\ \ \\=777+\frac{1}{5}+777+\frac{2}{5}+777+\frac{3}{5}+777+\frac{4}{5}\\ \ \\ =4\times(777)+(\frac{1}{5}+\frac{2}{5}+\frac{3}{5}+\frac{4}{5})\\ \ \\=3108+2\\ \ \\= 3110​​
    Thus, correct option is (a).

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