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JEE Main Mathematics question

MathematicsPermutations and CombinationsJEE Main

The number of group that can be made from different green balls, different blue balls and different red balls, if at latest green and blue ball is to be included, is

Answer: (B)

Solution

Green balls: at least one chosen, so choices; blue balls: choices. Red balls may be chosen or not:

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Question ID VK-020655