MathematicsMedium178×since 2002Q5297If the sum of the first n terms of the series 3+75+243+507+......\,\sqrt 3 + \sqrt {75} + \sqrt {243} + \sqrt {507} + ......3+75+243+507+...... is 4353,435\sqrt 3 ,4353, then n equals :A18B15C13D29Check answerSkip