Combinations, bad components

Problem: 2012-11-23 at 14:46.png

Attempt:

Correct is: 0.2036

I honestly can't figure out how they got that answer.

I think your attempt is correct.

Quote:

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Originally Posted by jacob93

Problem: 2012-11-23 at 14:46.png
Attempt:
Correct is: 0.2036

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You did not bother to tell witch one you are trying to do.

a)

b)

c) or

Tried b). Thanks both of you, now I know I'm right.

I honestly can't figure out how they got that answer.




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