GMAT数学DS题求解If .represent one of the operation + ,-,and x,is K.(L+M)=(K.L)+(K.M) for all number K,L,and 1)\x09K.1 is not equal to 1.K for some numbers K2)\x09.represents subtraction为什么答案选D,
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![GMAT数学DS题求解If .represent one of the operation + ,-,and x,is K.(L+M)=(K.L)+(K.M) for all number K,L,and 1)\x09K.1 is not equal to 1.K for some numbers K2)\x09.represents subtraction为什么答案选D,](/uploads/image/z/9485523-27-3.jpg?t=GMAT%E6%95%B0%E5%AD%A6DS%E9%A2%98%E6%B1%82%E8%A7%A3If+.represent+one+of+the+operation+%2B+%2C-%2Cand+x%2Cis+K.%EF%BC%88L%2BM%EF%BC%89%3D%28K.L%29%2B%28K.M%29+for+all+number+K%2CL%2Cand+1%29%5Cx09K.1+is+not+equal+to+1.K+for+some+numbers+K2%29%5Cx09.represents+subtraction%E4%B8%BA%E4%BB%80%E4%B9%88%E7%AD%94%E6%A1%88%E9%80%89D%2C)
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GMAT数学DS题求解If .represent one of the operation + ,-,and x,is K.(L+M)=(K.L)+(K.M) for all number K,L,and 1)\x09K.1 is not equal to 1.K for some numbers K2)\x09.represents subtraction为什么答案选D,
GMAT数学DS题求解
If .represent one of the operation + ,-,and x,is K.(L+M)=(K.L)+(K.M) for all number K,L,and
1)\x09K.1 is not equal to 1.K for some numbers K
2)\x09.represents subtraction
为什么答案选D,
GMAT数学DS题求解If .represent one of the operation + ,-,and x,is K.(L+M)=(K.L)+(K.M) for all number K,L,and 1)\x09K.1 is not equal to 1.K for some numbers K2)\x09.represents subtraction为什么答案选D,
条件一表明.只能代表- 所以明确:以上式子不成立!
条件二和条件一一样……
SO,两个单独都可以,选D