(1,2,3,)(2,3,5)(3,4,7) (4,5,9)求弟100组的三个数字之和
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![(1,2,3,)(2,3,5)(3,4,7) (4,5,9)求弟100组的三个数字之和](/uploads/image/z/5937978-66-8.jpg?t=%EF%BC%881%2C2%2C3%2C%EF%BC%89%EF%BC%882%2C3%2C5%EF%BC%89%283%2C4%2C7%29+%284%2C5%2C9%29%E6%B1%82%E5%BC%9F100%E7%BB%84%E7%9A%84%E4%B8%89%E4%B8%AA%E6%95%B0%E5%AD%97%E4%B9%8B%E5%92%8C)
(1,2,3,)(2,3,5)(3,4,7) (4,5,9)求弟100组的三个数字之和
(1,2,3,)(2,3,5)(3,4,7) (4,5,9)求弟100组的三个数字之和
(1,2,3,)(2,3,5)(3,4,7) (4,5,9)求弟100组的三个数字之和
100,101,201
100+101+201=402
2/3,1,6/5,4/3,( ),3/2
0-(+2/1)-(+5/2)-(-4/3)-(+4/1)-(-5/3)
(1) (2) (3) (4) (5)
1)2)3)4)5)
1) 2) 3) 4) 5)
1,2/3,5/3,4/3,7/3,2,3(),()找规律
4×(-1/2²)-3/2×(-2/5)
(1-3/2*4)*(1-3/3*5)*...*(1-3/7*9)
5/9+(3/4-1/2)
4/5+(3/8-1/2)
1/2+(-2/3)-(-4/5)+(-1/2)-(+1/3)
-1-(-2)-(+3)+(-4)-(-5)
(4/5+1/4)÷2/3+3/10
(2*3*4*5)*(1/2-1/3-1/4-1/5)
(1/3+2/3)+(1/4+2/4+3/4)+(1/5+2/5+3/5+4/5)+.+(1/100+.99/100)=
-3²×(-3)² (-1/2)×(-2/3)×(-3/4)×(-4/5)-3²×(-3)² (-1/2)×(-2/3)×(-3/4)×(-4/5)
3,2,5/3,3/2找规律(1)3(2)2(3)5/3(4)3/2……用n表示
(1-2)(1-3)(3-4)(4-5)...(19-20)=