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JEE Main Mathematics question

MathematicsPermutations and CombinationsJEE Main

There are distinct white and distinct black balls. If the number of ways of arranging them in a row so that neighboring balls are of different colors is then value of '' is

Answer: 4

Solution

Neighbours of different colours force the colours to alternate, starting with white or black: colour patterns. In each pattern the white

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Question ID VK-020715