2.27/7,53/6,79/5,99/4,107/3,97/2,()

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2.27/7,53/6,79/5,99/4,107/3,97/2,()2.27/7,53/6,79/5,99/4,107/3,97/2,()2.27/7,53/6,79/5,99/4,107/3,97

2.27/7,53/6,79/5,99/4,107/3,97/2,()
2.27/7,53/6,79/5,99/4,107/3,97/2,()

2.27/7,53/6,79/5,99/4,107/3,97/2,()
(27+1)/7=4 (53+1)/6=9 (79+1)/5=16 (99+1)/4=25 (107+1)/3=36 (97+1)/2=49 (x+1)/1=64 x=63 (4、9、16、25、36、49、64一次是2、3、4、5、6、7、8的平方)