sahil
Last Activity: 6 Years ago
see the answer is not infinity its convergence it can be calculated by limit.Here is ansIf you multiply it by (1-1/2) that is by 1/2 you see (1-1/2)(1+1/2)(1+1/4)....=(1-1/4)(1+1/4)(1+1/16)...=(1-1/16)(1+1/16)(1+1/256)... you will keep going and get finally (1-1/infinity) taking limit (1-1/infinity)=1 now divide by 1/2 as you mutiplied early givind answer 2.[Hence answer is 2]