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JEE Main Math Class 11 Permutations and Combinations 2 Questions

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Question : 33

Total: 87

Let the digits a, b, c be in A.P. Nine-digit numbers are to be formed using each of these three digits thrice such that three consecutive digits are in A.P. at least once. How many such numbers can be formed?

[12-Apr-2023 shift 1]

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