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19 January, 00:22

What's the missing number : 9876, 6447, 2527, x.?

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  1. 19 January, 00:46
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    The given pattern is 9876, 6447, 2527, x

    We have to find the missing number 'x' in the given pattern.

    We will use hit and trial method to get this missing number.

    Let us observe the given pattern.

    I have assumed the unknown number as - 1884

    that is the sequence becomes as

    9876, 6447, 2527, - 1884

    Consider the difference of first term from second term that is 6447 from 9876.

    6447 - 9876 = - 3429

    Consider the difference of second term from third term that is 2527 from 6447.

    2527-6447 = - 3920

    Consider the difference of third term from fourth term that is 2527 from - 1884

    = - 1884-2527

    = - 4411

    By computing the differences, we get

    -3429, - 3920, - 4411

    Now, the difference of - 3429 from - 3920

    = - 3920 - (-3429)

    = - 491

    Now, the difference of - 3920 from - 4411

    = - 4411 - (-3920)

    = - 491

    Which is same.

    Therefore, the missing number 'x' is - 1884.
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