3/4+3/16+3/64+3/256+3/1024+3/4096=
问题描述:
3/4+3/16+3/64+3/256+3/1024+3/4096=
答
3/4+3/16+3/64+3/256+3/1024+3/4096=3/4*[1-(1/4)^6]/(1-1/4)=4095/4096或者3/4+3/16+3/64+3/256+3/1024+3/4096=3072/4096+768/4096+192/4096+48/4096+12/4096+3/4096=4095/4096