1+1/2+3/4+7/8+15/16+31/32+63/64 简便计算,不通分.
问题描述:
1+1/2+3/4+7/8+15/16+31/32+63/64 简便计算,不通分.
答
=7×1-(1/2+1/4+1/8+1/16+1/32+1/64)
=7-63/64
=6又1/64