b,d?
【 在 A1551067 的大作中提到: 】
: 5. If it is equally likely to land on any of 16 squares numbered 1 thru 16, what is the probability of landing on an even number or a multiple of 3?
: (A) 1/2
: (B) 11/16
: ...................
--来自微微水木3.5.12
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FROM 111.192.100.*