There are \[(n+1)\] white and \[(n+1)\] black balls each set numbered 1 to \[n+1\]. The number of ways in which the balls can be arranged in a row so that the adjacent balls are of different colours is [EAMCET 1991]

There are \[(n+1)\] white and \[(n+1)\] black balls each set numbered

1.	There are \[(n+1)\] white and \[(n+1)\] black balls each set numbered 1 to \[n+1\]. The number of ways in which the balls can be arranged in a row so that the adjacent balls are of different colours is [EAMCET 1991]
A.	\[(2n+2)\ !\]
B.	\[(2n+2)\ !\ \times 2\]
C.	\[(n+1)\ !\ \times 2\]
D.	\[2{{\{(n+1)\ !\}}^{2}}\]
Answer» E.

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There are \[(n+1)\] white and \[(n+1)\] black balls each set numbered 1 to \[n+1\]. The number of ways in which the balls can be arranged in a row so that the adjacent balls are of different colours is [EAMCET 1991]

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