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How many three digit numbers are …

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How many three digit numbers are divisible by 7?

    • Posted by Parvez Alam 6 years, 11 months ago

    CBSE > Class 11 > Mathematics
    • 2 answers

    Mohit Saini 6 years, 11 months ago

    Digit divided by 7=105,112,119..........,994 it is in A.P USING An=a+(n-1)d, 105+(n-1)7=994 105+7n-7=994 7n=994-98 , 7n=896 , n=896/7=128 So,n=128

    1Thank You

    Rohit Gurav 6 years, 11 months ago

    Smallest three digit no. divisible by 7 = 105 Largest three digit no. divisible by 7=994 Therefore AP: 105,112,119,....,994. Using nth term formula, an=a+(n-1)d We get n = 128. Ans. 128 three digit numbers are divisible by 7

    2Thank You

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