A number is divisible by 11 when
Athe sum of its digits is divisible by 11
Bthe last two digits form a multiple of 11
Cthe difference between the sums of digits in odd and even places is 0 or a multiple of 11
Dits last digit is 0 or 1
Answer & Solution
Correct answer: C. the difference between the sums of digits in odd and even places is 0 or a multiple of 11
The divisibility rule for 11 states that if the difference between the sum of digits in odd places and the sum of digits in even places is 0 or a multiple of 11, then the number is divisible by 11. The other options describe different or incorrect tests.
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