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anonymous

  • one year ago

An art gallery has 8 new paintings, all the same size, but enough room on the wall for only 6 of them. How many ways can the director arrange the 8 paintings on the wall? A. 48 B. 28 C. 20,160 D. 40,320

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  1. anonymous
    • one year ago
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    C? @peachpi

  2. anonymous
    • one year ago
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    I think so. You did 8P6?

  3. anonymous
    • one year ago
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    yea and one sec let me try to explain what i think

  4. anonymous
    • one year ago
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    8! / 6!*(8-6)! = 28 So there are 28 ways in which 6 paintings may be chosen from 8. Each of those 28 can be arranged in 6*5*4*3*2 (720) ways. So the total number of arrangements is 28 * 720 20,160 answer is C

  5. anonymous
    • one year ago
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    solid :) seems like you have this down!

  6. anonymous
    • one year ago
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    i just needed to be sure thanks. :DD

  7. anonymous
    • one year ago
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    np

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