Bunuel wrote:
The product of integers w, x, y, and z is 210, and w > x > y > z > 0. Which of the following could NOT be the sum w + x + y + z?
A. 17
B. 19
C. 21
D. 31
E. 41
210 = 2*3*5*7 =Sum 17
1*6*5*7= Sum 19
1*3*10*7 = Sum 21
1*2*3*35 = Sum 41
But
1*1*14*15 = Sum 31 but w > x > y > z > 0
D
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