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A bag contains a total of 30 batteries, of which six are defective. Selecting four at random, without replacement, determine the probability that none of the batteries you select are good.

I think it's 2/15, but im not sure if that's correct....

  • Math-probability -

    Prob = (6/30)(5/29)(4/28)(3/27) = 1/1827

  • Math-probability -

    oh whoa i was way off! thanks Reiny :)

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