求教Prep的一道数学题

for all positive integers,*m*=3m,when m is odd, and *m*=(1/2)m,when m is even.Which of the following is equivalent to (*9*)乘以（*6*)

做了几遍都是81，但是prep 上的答案是 27

请XDJM帮着看看，谢谢啦

请lz看仔细，如果答案是*27*，则
*27* = 3x27= 81， which is equal to *9* x *6* = 81.  therefore, the answer is 27.

哈哈
谢谢啊,我明白了！

文字游戏啊 - -！