Sum of the squares of three numbers is 116 and the sum of their products taken two at a time is 70. Find the sum?  Select the correct option.
A) 14 B) 15 C) 16 D) 17 E) 18
(a + b + c)2 = a2 + b2 + c2 + 2(ab +bc + ca) = 116 + 2* 70   a + b + c = √256 = 16   16
<result>C</result>
Sum of the squares of three numbers is 116 and the sum of their products taken two at a time is 70. Find the sum?