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If a and b are digits between 0 and 9 th...

If a and b are digits between 0 and 9 the the rational number represented by 0 `.ababab` is (A) `(10a+b)/99` (B) `(9+b)/90` (C) `(a+b)/99` (D) `((99ab+10a+b))/990`

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