A group of scores 1 / 3, 1 / 2, 5 / 9, 7 / 12, 11 / 18 are arranged according to some rules. What is the 100th score?

As for the score, it's all about the score. Try to restore the problem and it's very clear
3/1,6/3,9/5,12/7,15/9,18/11……
That is, the molecule is an = 3N
The denominator is BN = 2N-1
So the 100th score is 300 / 199

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