Correct Answer: Option B
a+b = 2
a = 2 - b
(2 - b)b = 1
2b - b2 = 1
b2 - 2b + 1 = 0
(b-1) 2 = 0
b = 1
substituting b = 1 in any of the given equations gives us
a+ (1) = 2
a = 1
Download our app for free and access thousands of MCQ questions with detailed solutions