gmat prep数学prep里有这样一道数学题.for all the positive integers m, m(这个m外面有方框)=3m if m is odd, m(方框)=1/2m if m is even. Then which of the following is equivalent to 9(方框)*6(方框)?答案包括:81,54,36,27

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gmat prep数学prep里有这样一道数学题.for all the positive integers m, m(这个m外面有方框)=3m if m is odd, m(方框)=1/2m if m is even. Then which of the following is equivalent to 9(方框)*6(方框)?答案包括:81,54,36,27

gmat prep数学prep里有这样一道数学题.for all the positive integers m, m(这个m外面有方框)=3m if m is odd, m(方框)=1/2m if m is even. Then which of the following is equivalent to 9(方框)*6(方框)?答案包括:81,54,36,27
gmat prep数学
prep里有这样一道数学题.
for all the positive integers m, m(这个m外面有方框)=3m if m is odd, m(方框)=1/2m if m is even. Then which of the following is equivalent to 9(方框)*6(方框)?
答案包括:81,54,36,27,18
小弟的理解是,9*3乘以6的二分之一=81.
但是答案是27.小弟十分困惑,还望指教:)

gmat prep数学prep里有这样一道数学题.for all the positive integers m, m(这个m外面有方框)=3m if m is odd, m(方框)=1/2m if m is even. Then which of the following is equivalent to 9(方框)*6(方框)?答案包括:81,54,36,27
答案应该是81.
但是,请仔细审题,如果答案的选项是:27(这个27外面有方框),那么正确答案应该是27(方框).因为81=27(方框)=27×3.

是81了, GMAT数学不可能拐那么多弯子的

相信自己,错的不是你,错的是答案。

准确的说答案是方框27,方框27=81