MathematicsMedium178×since 2002Q5306If the sum of the first 15 terms of the series (34)3+(112)3+(214)3+33+(334)3+....{\left( {{3 \over 4}} \right)^3} + {\left( {1{1 \over 2}} \right)^3} + {\left( {2{1 \over 4}} \right)^3} + {3^3} + {\left( {3{3 \over 4}} \right)^3} + ....(43)3+(121)3+(241)3+33+(343)3+.... is equal to 225 k, then k is equal to :A9B108C27D54Check answerSkip