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

Related Mcqs:

The sum of squares of three numbers is 280. If the numbers are in the ratio 3:5:6, find the greatest number.
A. 8 B. 6 C. 12 D. 18...
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