S=1-2-3+4+5-6-7+8+….+2001-2002-2003+2004+2005

Question

S=1-2-3+4+5-6-7+8+….+2001-2002-2003+2004+2005

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Brielle 1 năm 2021-12-06T09:15:55+00:00 2 Answers 2 views 0

Answers ( )

  1. minhuyen
    0
    2021-12-06T09:17:35+00:00
    Reply

    Đáp án:

     

    Giải thích các bước giải:

    S=1-2-3+4+5-6-7+8+….+2001-2002-2003+2004+2005

    S=(1-2-3+4)+(5-6-7+8)+….+(2001-2002-2003+2004)+2005

    S= 0+0+…+0+2005

    S=2005

  2. tuminh2
    0
    2021-12-06T09:17:49+00:00
    Reply

    S=1-2-3+4+5-6-7+8+….+2001-2002-2003+2004+2005

    S= (1-2-3+4)+(5-6-7+8)+….+(2001-2002-2003+2004)+2005

    S= 0+0+….+0+2005

    S=0.501+2005

    S=2005

     

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