N*****N 发帖数: 1605 | 1 20/9,4/3,7/9,4/9,1/4,( )
下个是啥?
A.5/36 B.1/6 C.7/9 D.3/144
给出详尽解释,合理的都算正确结果 | c******a 发帖数: 25 | 2 A.5/36
80/36, 48/36, 28/36, 16/36, 9/36
=====> 80, 48, 28, 16, 9
=====>80 = 48 * 2 - 2/\4
48 = 28 * 2 - 2/\3
28 = 16 * 2 - 2/\2
16 = 9 * 2 - 2/\1
9 = x * 2 -2/\0
======> x = 5 | N*****N 发帖数: 1605 | 3 赞
【在 c******a 的大作中提到】 : A.5/36 : 80/36, 48/36, 28/36, 16/36, 9/36 : =====> 80, 48, 28, 16, 9 : =====>80 = 48 * 2 - 2/\4 : 48 = 28 * 2 - 2/\3 : 28 = 16 * 2 - 2/\2 : 16 = 9 * 2 - 2/\1 : 9 = x * 2 -2/\0 : ======> x = 5
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