六年级数奥题一堆.【1】1-1/2-1/4-1/8-1/16-1/32-1/64【2】1/2002+2/2002+3/2002+4/2002-5/2002-6/2002-7/2002-8/2002+9/2002.+2001/2002+2002/2002【3】1/2+(1/3+2/3)+(1/4+2/4+3/4)+(1/5+2/5+3/5+4/5)+.+(1/20+2/2
六年级数奥题一堆.
【1】1-1/2-1/4-1/8-1/16-1/32-1/64
【2】1/2002+2/2002+3/2002+4/2002-5/2002-6/2002-7/2002-8/2002+9/2002.+2001/2002+2002/2002
【3】1/2+(1/3+2/3)+(1/4+2/4+3/4)+(1/5+2/5+3/5+4/5)+.+(1/20+2/20+3/20+.+18/20+19/20)
最快回答又被采纳的话会增加悬赏的!