求问一道GMAT数学题!貌似挺简单= =就是卡在这了If 2, x, y, and z are different positive integers whose average (arithmetic mean) is 10, what is the greatest possible value of z ?A. 10B. 24C. 34D. 36E. 40

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求问一道GMAT数学题!貌似挺简单= =就是卡在这了If 2, x, y, and z are different positive integers whose average (arithmetic mean) is 10, what is the greatest possible value of z ?A. 10B. 24C. 34D. 36E. 40
求问一道GMAT数学题!貌似挺简单= =就是卡在这了
If 2, x, y, and z are different positive integers whose average (arithmetic mean) is 10, what is the greatest possible value of z ?
A. 10
B. 24
C. 34
D. 36
E. 40

求问一道GMAT数学题!貌似挺简单= =就是卡在这了If 2, x, y, and z are different positive integers whose average (arithmetic mean) is 10, what is the greatest possible value of z ?A. 10B. 24C. 34D. 36E. 40
应该选C
x y z 2 是不同的正整数 ,要求z的最大值,所以x y应该最小,即x,y一个为1,一个为3
所以z=40-1-2-3=34
挺简单的 估计你是你时没想到