Sum of the squares of three numbers is 414 and the sum of their products taken two at a time is 131. Find the sum?  Choose the correct choice from the following answers:
A) 20
B) 22
C) 25
D) 26
E) 29
(a + b + c)2 = a2 + b2 + c2 + 2(ab +bc + ca) = 414 + 2* 131   a + b + c = √676 = 26   26
<result>D</result>
Sum of the squares of three numbers is 414 and the sum of their products taken two at a time is 131. Find the sum?