T is the set of all numbers that can be written as a sum involving distinct real numbers a,b,c and d:
|a|a + 2|b|b + 3|c|c + 4|d|d + 5|abcd|abcd. what is the range of T?
A. 15
B. 20
C. 28
D. 29
E. 30
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vineeshp
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Looks too long to be solved for a GMAT exam.
We have to consider all cases of positive and negative values for a to d.
The max value will be when all 4 are positive.
Least will be when a is positive and all others are negative.
We have to consider all cases of positive and negative values for a to d.
The max value will be when all 4 are positive.
Least will be when a is positive and all others are negative.
Vineesh,
Just telling you what I know and think. I am not the expert.
Just telling you what I know and think. I am not the expert.
