anonymous
  • anonymous
You have checked out b books from the library, where b is a number greater than 5. You plan to read three of the books and return them at the end of this week. In how many ways can you pick the books you will read first, second, and third?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
A. b3 ways B. (b3 - 3b2 + 2b) ways C. (b3 - 9b2 + 27b - 27) ways D. (5b - 3) ways
kropot72
  • kropot72
There are b choices for the first book, (b - 1) choice for the second choice and (b - 2) choices for the third. \[\large Number\ of\ choices=b \times (b-1)\times (b-2)=you\ can\ multiply\ out\]
anonymous
  • anonymous
so would it be D?

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arindameducationusc
  • arindameducationusc
I guess Not D
kropot72
  • kropot72
Partially multiplying out, the number of ways is given by\[\large b(b^{2}-3b+2)=you\ can\ multiply\ out\]
anonymous
  • anonymous
Honestly, this makes no sence to me
arindameducationusc
  • arindameducationusc
okay, do you know distributive law?
anonymous
  • anonymous
yes.
anonymous
  • anonymous
I got B. Is that correct?
kropot72
  • kropot72
Yes, b is the correct choice of answer.
anonymous
  • anonymous
OKay, thank you
kropot72
  • kropot72
You're welcome :)

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