Sum of the squares of 3 no.'s is 222 and the sum of their products taken two at a time is 131. Find the sum?
Choose the correct choice from the following choices
A) 22	B) 24	C) 26	D) 28	E) 30

Rationale: "( a + b + c ) 2 = a 2 + b 2 + c 2 + 2 ( ab + bc + ca ) = 222 + 2 * 131 a + b + c = √ 484 = 22 a"
Answer: A