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# Three red bottles and three blue bottles are to be arranged in a strai

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Math Expert
Joined: 02 Sep 2009
Posts: 60727
Three red bottles and three blue bottles are to be arranged in a strai  [#permalink]

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26 Apr 2017, 08:33
00:00

Difficulty:

25% (medium)

Question Stats:

75% (00:47) correct 25% (01:11) wrong based on 32 sessions

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Three red bottles and three blue bottles are to be arranged in a straight line from left to right on a windowsill. How many different unique arrangements are possible?

A. 1
B. 6
C. 18
D. 20
E. 36

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Re: Three red bottles and three blue bottles are to be arranged in a strai  [#permalink]

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26 Apr 2017, 08:43
Answer is D : 20

Total combinations - 6! (3 red 3 blue)
Redundant combinations (3 each)

Calculation 6!/3! * 3! = 20
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Re: Three red bottles and three blue bottles are to be arranged in a strai   [#permalink] 26 Apr 2017, 08:43
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# Three red bottles and three blue bottles are to be arranged in a strai

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