考大家一道小学三年级的数学题

What is the missing number in this series?

73, 12, 6, 3, 5,      , 4, 4

(1) 10 (2) 55 (3) 6 (4) 20 (5) 4


 

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不会,公布答案吧 -yasas- 给 yasas 发送悄悄话 (0 bytes) () 09/23/2013 postreply 05:38:45

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