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3 years ago

Hillary can read 560 words in seven minutes how many words can Hillary read in one minute

Mathematics

1 answer:

Lorico [155]3 years ago

3 0

560 / 7 = 80

<span>Hillary can read 80 words per minute.

</span><span>I hope this helps :)</span>

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Answer: $4.37\times10^3$

Step-by-step explanation:

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Number of choices for plays = 6

Number of choices for poetry books = 5

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If he wants to include all 4 novels, then the number of books left to select = 9-4=5

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Number of combinations of n things taking r at a time : $\dfrac{n!}{r!(n-r)!}$

Then, the number of different reading schedules are possible :_

$^4C_4\times^{16}C_5\\\\=\dfrac{4!}{4!(4-4)!}\times\dfrac{16!}{5!(16-5)!}\\\\=(1)\times\dfrac{16\times15\times14\times13\times12\times11!}{120\times11!}\\\\=4368=4.368\times10^3\approx4.37\times10^3$

Hence, the required answer is $4.37\times10^3$ .

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