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31 January, 20:15

In a bag of keys, there are 15 silver keys, 5 black keys, 11 copper keys, and 4 painted keys of various colors. One key is drawn out at random. What is the probability that the key that is drawn is silver or copper?

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  1. 31 January, 23:21
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    There is a 74% chance that the key drawn will be silver or copper.

    I got this because I added all of them and got a total of 35 and then I took the total of silver and copper keys being, 26 and I divided 26 from 35 and got 74%
  2. 1 February, 00:06
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    15 silver keys,

    5 black keys,

    11 copper keys,

    4 painted

    35 total

    15 + 11 = 26

    26/35 = 0.7428 ≈ 74.28% probability
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