Sum of the squares of three numbers is 99 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) 25	C) 19	D) 28	E) 29
(a + b + c)2 = a2 + b2 + c2 + 2(ab +bc + ca) = 99 + 2* 131   a + b + c = √361 = 19   19
<result>C</result>
Sum of the squares of three numbers is 99 and the sum of their products taken two at a time is 131. Find the sum?