Find the sum up to the infinity of the series of-1/2+3/6+5/18+............. This question has not been answered yet! Don't worry! You can check out similar questions with solutions below find the sum up to n terms 1 + ( 1+ 1/2 ) + ( 1+ 1/2 +1/4 ) ... Find the sum up to 20 terms find the sum up to n terms= 12 + (12 + 22 ) +(12+ 22 +32 ) ... Find the sum to n terms of the given series. find the sum of first n terms of the series 1^2+2^2+...+n^2