(1-1/2)x(1-1/3)x(1-1/4)x(1-1/5)x(1-1/6)x(1-1/7)x(1-1/8)x(1-1/9)

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(1-1/2)x(1-1/3)x(1-1/4)x(1-1/5)x(1-1/6)x(1-1/7)x(1-1/8)x(1-1/9)

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Alexandra 7 ngày 2021-12-04T06:22:31+00:00 2 Answers 3 views 0

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    0
    2021-12-04T06:23:35+00:00

    `(1-1/2)×(1-1/3)×(1-1/4)×(1-1/5)×(1-1/6)×(1-1/7)×(1-1/8)×(1-1/9)`

    `=(2/2-1/2)×(3/3-1/3)×(4/4-1/4)×(5/5-1/5)×(6/6-1/6)×(7/7-1/7)×(8/8-1/8)×(9/9-1/9)`

    `=1/2×2/3×3/4×4/5×5/6×6/7×7/8×8/9`

    `=(1×2×3×4×5×6×7×8)/(2×3×4×5×6×7×8×9)`

    `=1/9`

     

    0
    2021-12-04T06:24:29+00:00

    `\text{~~Holi~~}`

    `(1-1/2)(1-1/3)(1-1/4)(1-1/5)(1-1/6)(1-1/7)(1-1/8)(1-1/9)`

    `= 1/2 . 2/3 . 3/4 . 4/5 . 5/6 . 6/7 . 7/8 . 8/9`

    `=1/9`

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