Correction

本帖于 2009-12-19 10:40:17 时间, 由普通用户 康MM 编辑
回答: IBM 11月:猜因子(2.5星)康MM2009-11-02 17:45:02

Oops, just re-read the problem, the upper number is 166, not 162! but the method is the same, so the answer for part 2 should be:

(83*1+28*2+11*3+7*4+3*5+33*5)/165 = 380/165 = 76/31

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