1.The sum of the series 11+11+2+11+2+3+⋯\dfrac{1}{1} + \dfrac{1}{1+2} + \dfrac{1}{1+2+3} + \cdots11+1+21+1+2+31+⋯ up to 101010 terms isa.2213\dfrac{22}{13}1322b.1811\dfrac{18}{11}1118c.2011\dfrac{20}{11}1120d.169\dfrac{16}{9}916Login to continueOnly logged in users canattempt or see the solution.
