Sum of the squares of 3 no. is 276 and the sum of their products taken two at a time is 150. Find the sum?  Choose the most appropriate option: A) 22 B) 18 C) 26 D) 24 E) 32

Rationale: "( a + b + c ) 2 = a 2 + b 2 + c 2 + 2 ( ab + bc + ca ) = 276 + 2 * 150 a + b + c = â ˆ š 576 = 24 answer d"
Answer: D