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Which of the following statement(s) is/a...

Which of the following statement(s) is/are true? (a) `log_(10)2` lies between `1/4a n d1/3` (b) `log_(cosec (pi//6))(cos\ pi/3)=-1` (c) `e^(ln(ln3))` is smaller than 1 (d) `log_(10)1+1/2log_(10)3+log_(10)(2+sqrt(3))=log_(10)(1+sqrt(3)+(2+sqrt(3)))`

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