If log2=a and log3=b then [log1 + log(1+3) + log(1+3+5) +........... +log(1+3+5+7+..........+19)] - 2[log1 + log2 + log3 +.........+ log7] = p+qa+rb where p q and r are constants. what is the value of p+2q+3r if all logs are in base 10?

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