Description : What is the sum of the series 1,2,4,8,16,31.........till 1000 terms?
Last Answer : The question is somewhat wrong because it must be 1+2+4+8+16+32+....+1000th term However , now coming to the point 1+2+4+8+16+32+..+1000th term => 1+(21+22+23+24+....+2999 ) => 1+{2 ... -1)}...This is the correct answer. As we all know Sn= Summation of n number digits in a series is= 2(2n-1)