JEE Main 2019 Mathematics question
The number of 6 digit numbers that can be formed using the digits 0, 1, 2, 5, 7 and 9 which are divisible by 11 and no digit is repeated is:
Answer: (B)
Solution
Odd and even place sums must both be 12: {1, 2, 9} and {0, 5, 7}. {1,2,9} in odd
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