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Question
3×2 divisible by 11?
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Solution
Sum of the digit in even place = x
and sum of the digits in odd place = 3 + 2 = 5
Difference of the sum of the digits in even places and in odd places = x – 5
3×2 is a multiple of 11
⇒ x – 5 = 0, 11, 22,
⇒ x = 5, 16, 27,
Since, x is a digit x = 5
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