Question

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

Posted under Aptitude

Answer: (a).20

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Q. 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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