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wwym 发表于 2016-10-31 11:58
I don't quite get how you find the "closer and closer to 50" at fisrt glance. Can you elaborate? B ...
The purpose of Gmat is to test the mental flexibility of the test takers and the complicated formula is never needed. So just tests a few numbers k1, k2, k3, k4, the pattern appears. The part of 0.2kn will always be 50, then next number 200+250*02=250 will always be the same answer. |
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