The sequence 1/1,1/2,2/2,1/3,2/3,3/3,1/4,2/4,3/4,4/4,then th
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The sequence 1/1,1/2,2/2,1/3,2/3,3/3,1/4,2/4,3/4,4/4,then the 2003rd number is
(英汉小词典:sequence 序列)
(英汉小词典:sequence 序列)
![The sequence 1/1,1/2,2/2,1/3,2/3,3/3,1/4,2/4,3/4,4/4,then th](/uploads/image/z/5929349-5-9.jpg?t=The+sequence+1%2F1%2C1%2F2%2C2%2F2%2C1%2F3%2C2%2F3%2C3%2F3%2C1%2F4%2C2%2F4%2C3%2F4%2C4%2F4%2Cthen+th)
规律:
分母为1的有1个
分母为2的有2个
分母为3的有3个
因为
当n=62时,(62+1)*62/2 = 1953
当n=63时,(63+1)*63/2 = 2016
所以第2003项分母为63,分子为2003-1953=50
第2003个数是50/63
原谅我不能用英语回答...
分母为1的有1个
分母为2的有2个
分母为3的有3个
因为
当n=62时,(62+1)*62/2 = 1953
当n=63时,(63+1)*63/2 = 2016
所以第2003项分母为63,分子为2003-1953=50
第2003个数是50/63
原谅我不能用英语回答...
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