Interview Q&A / Aptitude
Aptitude interview questions
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- What digit x makes the number 4x6723 divisible by 11?
x = 2. For divisibility by 11, the difference between the sum of digits in odd places and in even places (counted from the right) must be 0 or a multiple of 11. Here that difference is x - 2, so x = 2, giving 426723 = 11 x 38793.
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