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In how many ways can 2 identical green chairs and 4 identical

Question

In how many ways can $2$ identical green chairs and $4$ identical yellow chairs be arranged in a row?

6

15

21

24

30

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In how many ways can

2

identical green chairs and

4

identical yellow chairs be arranged in a row?

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Text solutionVerified

We can arrange $4$ identical yellow chairs and $2$ identical green chairs in $\frac{( 4 + 2 )!}{4 ! 2 !} = \frac{6 !}{4 ! 2 !} = 15$

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Question Text	In how many ways can $2$ identical green chairs and $4$ identical yellow chairs be arranged in a row?
Answer Type	Text solution:1
Upvotes	150