Question

ab + ba is always a multiple of
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Answer 1

Answer:

Hence, ab – ba is always divisible by 9 and (a – b). Question. 23 The difference of three-digit number and the number obtained by putting the digits in reverse order is always divisible by 9 and——-. Hence, abc – cba is always divisible by 9,11 and (a – c).

Step-by-step explanation:

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Answer 2

Answer:

ANSWER

ab+ba is always a multiple of 11

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