GRE数学whichofthefollowingcannotbeafactorof2^i*3^jwhereiandjarepositiveintergers?
whichofthefollowingcannotbeafactorof2^i*3^jwhereiandjarepositiveintergers?
A.6
B.8
C.27
D.42
E.54
为什么是C,j是3的时候,27不就是一个因子么?