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If a ,b ,c are digits, then the rational...

If `a ,b ,c` are digits, then the rational number represented by `odotc a b a b a b` ...is a. `(c a b)/990` b. `(99 c+b a)/990` c. `(99 c+10 a+b)/99` d. `(99 c+10 a+b)/990`

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