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Laura has decided to display 5 of her glass animal figurines on a shel

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Laura has decided to display 5 of her glass animal figurines on a shel  [#permalink]

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New post 27 Feb 2019, 23:20
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Question Stats:

53% (02:15) correct 47% (02:12) wrong based on 19 sessions

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Laura has decided to display 5 of her glass animal figurines on a shelf. If she has 6 circus animals and 5 farm animals from which to choose, and she wants a farm animal in the middle of the display, then how many arrangements of the figurines are possible?

A. 30
B. 150
C. 3,024
D. 25,200
E. 30,240
Spoiler: OA

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Re: Laura has decided to display 5 of her glass animal figurines on a shel  [#permalink]

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New post 28 Feb 2019, 04:16
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Bunuel wrote:
Laura has decided to display 5 of her glass animal figurines on a shelf. If she has 6 circus animals and 5 farm animals from which to choose, and she wants a farm animal in the middle of the display, then how many arrangements of the figurines are possible?

A. 30
B. 150
C. 3,024
D. 25,200
E. 30,240


fix the middle position where we can subsitute any of 5 farm animals
so for rest of 4 positions we have 10 options
we can say Laura has ; 10*9*5*8*7 = 25200 arrangements possible
IMO D
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Re: Laura has decided to display 5 of her glass animal figurines on a shel   [#permalink] 28 Feb 2019, 04:16
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