Giúp mik vs ạ cảm ơn trc

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Giúp mik vs ạ cảm ơn trc
giup-mik-vs-a-cam-on-trc

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Kiệt Gia 8 tháng 2020-10-28T17:37:25+00:00 2 Answers 63 views 0

Answers ( )

  1. `(1-2/5)(1-2/7)(1-2/9)…(1-2/99)`

    `= 3/5 . 5/7 . 7/9 . …97/99`

    `=(3.5.7..97)/(5.7.9…99)`

    `=3/99

    `=1/33`

  2. `(1-2/5)(1-2/7)(1-2/9)…(1-2/99)`

    `= 3/5 . 5/7 . 7/9 . …97/99`

    `=3/99=1/33`

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