#Book Permutation Problem 4

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sick belfry
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Six persons wish to select 1 book each from a shelf containing 10 books, 5 of which are in English, 3 in German, and 2 in French. How many different selections are possible

(a) if one of the persons cannot read German and must select a book in English or French?

(b) if two of the persons must select books in English?

My solution:

(a) 7 * 9 * 8 * 7 * 6 * 5 =105,840 selections
(b) 5 * 4 * 8 * 7 * 6 * 5 = 33,600 selections

Please check if I am right or wrong, Thanks!

proud plankBOT
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frosty pendant
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hint:|| it says or, so there is more than one case possible||

sick belfry
frosty pendant
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i will double check though

sick belfry
frosty pendant
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yes it works

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yeah it’s just distributive property

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i would rather see it via 2 cases

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more visual for me

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but if it works for you go ahead

sick belfry
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thanks!

frosty pendant
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you’re welcome!

thorny holly
fair iglooBOT
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@sick belfry

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