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JEE Main Mathematics question

MathematicsPermutations and CombinationsJEE Main

In an steamer there are stalls for animals and there are hours, cows and calves (not less then each) ready to be shipped in how many ways can the ship load be made?

Answer: (B)

Solution

Each of the stalls holds one animal, which can be a horse, a cow or a calf, and there are at least animals of each kind, so no kind runs out. Each stall therefore has

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Question ID VK-020695