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The sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Their sum is :___________?
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The sum of the squares of three numbers is 138, while the sum of their products taken two at a time is 131. Their sum is :___________?
A. 20
B. 30
C. 40
D. None of these
Correct Answer:
A. 20
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Last Updated:
February 07, 2020