1）yes
2）not sure因为x为奇数时y,z可一奇数一偶数
偶数时yz全为奇数均是可能情况
GMAT数学求解
GMAT数学求解
If x, y, z areinteger and xy+z is an odd integer, is x an even integer?
1)xy+xz is an even integer
2)y+xz is an odd integer
If x, y, z areinteger and xy+z is an odd integer, is x an even integer?
1)xy+xz is an even integer
2)y+xz is an odd integer
其他人气：707 ℃时间：2020-02-05 18:07:04
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