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JEE Main 2026 Mathematics question

MathematicsPermutations and CombinationsJEE Main 2026

Let . Let x be the number of 9-digit numbers formed using the digits of the set S such that only one digit is repeated and it is repeated exactly twice. Let y be the number of 9-digit numbers formed using the digits of the set S such that only two digits are repeated and each of these is repeated exactly twice. Then,

Answer: (3)

Solution

, Missing superscript or subscript argumenty = {}^9C_2Missing superscript or subscript argument · {}^7C_5$

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Question ID VK-001524