1/2+1/4+1/8+1/16+1/32+1/64简便运算

学习 时间:2026-04-04 20:54:46 阅读:4514
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最佳回答

受伤的灯泡

慈祥的季节

2026-04-04 20:54:46

解法一:

1/2+1/4+1/8+1/16+1/32+1/64

=1/2+1/4+1/8+1/16+1/32+1/64+1/64-1/64

=1/2+1/4+1/8+1/16+1/32+1/32-1/64

=1/2+1/4+1/8+1/16+1/16-1/64

=1/2+1/4+1/8+1/8-1/64

=1/2+1/4+1/4-1/64

=1/2+1/2-1/64

=1-1/64

=63/64

 

解法二:

1/2+1/4+1/8+1/16+1/32+1/64

=(1-1/2)+(1/2-1/4)+(1/4-1/8)+(1/8-1/16)+(1/16-1/32)+(1/32-1/64)

=1-1/64

=63/64

最新回答共有2条回答

  • 炙热的煎饼
    回复
    2026-04-04 20:54:46

    解法一:

    1/2+1/4+1/8+1/16+1/32+1/64

    =1/2+1/4+1/8+1/16+1/32+1/64+1/64-1/64

    =1/2+1/4+1/8+1/16+1/32+1/32-1/64

    =1/2+1/4+1/8+1/16+1/16-1/64

    =1/2+1/4+1/8+1/8-1/64

    =1/2+1/4+1/4-1/64

    =1/2+1/2-1/64

    =1-1/64

    =63/64

     

    解法二:

    1/2+1/4+1/8+1/16+1/32+1/64

    =(1-1/2)+(1/2-1/4)+(1/4-1/8)+(1/8-1/16)+(1/16-1/32)+(1/32-1/64)

    =1-1/64

    =63/64

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