17

Corbettmaths – Videos, worksheets, 5-a-day and much more€¦ · ph ecglG lgct0L —S negua OLIðlU ge C6UCLG Cu ePOMU g OU g cootq!LJS16 auq . COHBE-LLVNVLHe e ÀonL sueMGC Dose

  • Upload
    others

  • View
    0

  • Download
    0

Embed Size (px)

Citation preview

  • E x E x E = EE x E x O = EE x O x E = EO x E x E = EO x O x E = EO x E x O = EE x O x O = E

    But... O x O x O = Odd

    1 - P(odd) = P(even)

    4/9 x 3/8 x 2/7 = 24/504 = 1/21

    P(even) = 1 - (1/21) = 20/21