The product of two numbers is 120 and the sum of their squares is 289. The sum of the number is
Options:
A) 20
B) 23
C) 27
D) 150
E) 255

Rationale: "explanation : we know ( x + y ) 2 = x 2 + y 2 + 2 xy = > ( x + y ) 2 = 289 + 2 ( 120 ) = > ( x + y ) = 529 − − − √ = 23 option b"
Answer: B