1/2+5/6+11/12+19/20+29/30+……+9701/9702+9899/9900
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![1/2+5/6+11/12+19/20+29/30+……+9701/9702+9899/9900](/uploads/image/z/245138-50-8.jpg?t=1%2F2%2B5%2F6%2B11%2F12%2B19%2F20%2B29%2F30%2B%E2%80%A6%E2%80%A6%2B9701%2F9702%2B9899%2F9900)
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1/2+5/6+11/12+19/20+29/30+……+9701/9702+9899/9900
1/2+5/6+11/12+19/20+29/30+……+9701/9702+9899/9900
1/2+5/6+11/12+19/20+29/30+……+9701/9702+9899/9900
原式=(1-1/2)+(1-1/6)+......+(1-1/9900)
=99-(1/2+1/6+....+1/9900)
=99-(1/1×2+1/2×3+1/3×4+.....+1/99×100)
=99-(1-1/2+1/2-1/3+1/3-...+1/99-1/100)
=99-99/100
=98+1/100
原式=(1-1/2)+(1-1/6)+......+(1-1/9900)
=99-(1/2+1/6+....+1/9900)
=99-(1/1×2+1/2×3+1/3×4+.....+1/99×100)
=99-(1-1/2+1/2-1/3+1/3-...+1/99-1/100)
=99-99/100
=98+1/100...
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原式=(1-1/2)+(1-1/6)+......+(1-1/9900)
=99-(1/2+1/6+....+1/9900)
=99-(1/1×2+1/2×3+1/3×4+.....+1/99×100)
=99-(1-1/2+1/2-1/3+1/3-...+1/99-1/100)
=99-99/100
=98+1/100
收起
1/2+5/6+11/12+19/20+...+9898/9900
1/2+5/6+11/12+19/20如何解
1/2+5/6+11/12+19/20+20/30怎么做,
1+1/2+5/6+11/12+19/20+……+9899/9900=?
找规律填空:1/2、5/6、11/12、19/20、( )、41/42
1/2+5/6+11/12+19/20+29/30+41/42+55/56=怎麽做?
计算:1/2+5/6+11/12+19/20+……+89/90+109/110=
找规律填数1/2,5/6,11/12,19/20,( ),41/42.
1/2+5/6+11/12+19/20+29/30+41/42=?=多少
1/2+5/6+11/12+19/20+...9701/9702+9899/9900怎么解
1/2+5/6+11/12+19/20+29/30+...+9701/9702+9899/9900
请问:1/2+5/6+11/12+19/20+29/30+.+9701/9702+9899/9900=?
1/2+5/6+11/12+19/20+...+89/90+109/110简便运算十加十加十加十万火急
1/2+5/6+11/12+19/20+...+89/90+109/110的值是?
1/2+5/6-7/12+9/20-11/30.-19/90+21/110
1-3/2+5/6-7/12+9/20-11/30+.-19/90+21/110=?
1/2+5/6+11/12+19/20+.+379/380=
1/2+5/6+11/12+19/20+……+209/210+239/240