Sequence 1 / 1,1 / 2,2 / 1,1 / 3,2 / 2,3 / 1,1 / 4,2 / 3,2 / 3,4 / 1 Item 2003 The teacher's answer is 50 / 14. I made 50 / 13 myself. Please come and see how much it is,

Sequence 1 / 1,1 / 2,2 / 1,1 / 3,2 / 2,3 / 1,1 / 4,2 / 3,2 / 3,4 / 1 Item 2003 The teacher's answer is 50 / 14. I made 50 / 13 myself. Please come and see how much it is,

To be sure, your answer is right!
According to the given law:
1 / 1 has 1 item
There are two items after 1 / 2 [guarantee that the sum of numerator and denominator is 3]
The last three items after 1 / 3
There are four items after 1 / 4
……
So, 1 / N is preceded by 1 + 2 + 3 + +(n-1) = n (n-1) / 2 terms
When n = 64, there are 64 * 63 / 2 = 2016 items before 1 / 64
Further on, the sum of the numerator and denominator should be 63
And the reverse is: 63 / 1; 62 / 2; 61 / 3
So item 2003 is 50 / 13