(+1)+(-2)+(+3)+.(+99)+(-100)=?
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/07 17:49:20
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99*(1+2+3+.+8+9)
(-1)+2+(-3)+4+…+(-99)+100
(-1)+2+(-3)+4+.+(-99)+100
99×(99+1)?
巧算(奥数题)问:(1+1/2)×(1-1/2)×(1+1/3)×(1-1/3)×...(1+1/99)×(1-1/99)
99÷(99+1)÷(99+2)×(99-3)÷(99+4)÷(99+5)×(99-6)÷…÷(99+101)
(1+1/2)*(1-1/2)*(1+1/3)*(1-1/3)*……*(1+1/99)*(1-1/99)
(1+1/2)×(1-1/2)×(1+1/3)×(1-1/3)×...×(1+1/99)×(1-1/99)=?
(1+1/2)×(1-1/2)×(1+1/3)×(1-1/3)×……×(1+1/99)×(1-1/99)=
(1+1/2)(1-1/2)(1+1/3)(1-1/3)……(1+1/99)(1-1/99)
简便计算:(1+2/3)×(1-2/3)×(1+2/5)×(1-2/5)×.×(1+2/99)×(1-2/99)
(1+2/3)×(1- 2/3)×(1+2/5)×(1- 2/5)×...×(1+2/99)×(1- 2/99)=?
计算:1+(-2)+3…+99+(-100)
1+(-2)+3+.99+(-100)=?
(-1)+(+2)+(-3)+(+4)+...+(-99)+(+100)
(+1)+(-2)+(+3)+(-4)+...+(+99)+(-100)怎么计算?
(+1)+(-2)+(+3)+(+4)+.+(+99)+(-100)+(+101)等于多少.
(+1)+(-2)+(+3)+(-4)+〜〜+(+99)+(-100)