1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256+1/512+1/1024+1/2048+1/4096+.(1) 前12个加数的和是(

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1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256+1/512+1/1024+1/2048+1/4096+.(1)前12个加数的和是(1/2+1/4+1/8+1/16+1/3

1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256+1/512+1/1024+1/2048+1/4096+.(1) 前12个加数的和是(
1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256+1/512+1/1024+1/2048+1/4096+.(1) 前12个加数的和是(

1/2+1/4+1/8+1/16+1/32+1/64+1/128+1/256+1/512+1/1024+1/2048+1/4096+.(1) 前12个加数的和是(
1-1/4096=4095/4096