Sum of the squares of three numbers is 225 and the sum of their products taken two at a time is 200. Find the sum?
Choose the correct choice from the following
A) 20	B) 22	C) 25	D) 26	E) 29
(a + b + c)2 = a2 + b2 + c2 + 2(ab +bc + ca) = 225 + 2* 200   a + b + c = √625 = 25   25
<result>C</result>
Sum of the squares of three numbers is 225 and the sum of their products taken two at a time is 200. Find the sum?