Sum of the squares of three numbers is 129 and the sum of their products taken two at a time is 250. Find the sum?	Choose the correct choice from the following.
A) 20	B) 23	C) 25	D) 26	E) 29
(a + b + c)2 = a2 + b2 + c2 + 2(ab +bc + ca) = 129 + 2* 250   a + b + c = √529 = 23   23
<result>B</result>
Sum of the squares of three numbers is 129 and the sum of their products taken two at a time is 250. Find the sum?