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Anonymous User Best Answer
A number which divisible by 9 and 11 also divisible 99 Take the alternating sum of the digits in the number, read from left to right. If that is divisible by 11, so is the original number. [6 The rule for divisibility by 9 is similar to divisibility rule for 3. That is, if the sum of digits of the number is divisible by 9, then the number itself is divisible by 9. 114345 Is divisible by 9 and 11 so 99