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There are 2 identical white balls, 3 ide...

There are 2 identical white balls, 3 identical red balls, and 4 green balls of different shades. Find the number of ways in which they can be arranged in a row so that atleast one ball is separated from the balls of the same color.

A

6(7!-4!)

B

7(6!-4!)

C

8!-5!

D

none

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The correct Answer is:
A
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