Instructions

In each of the questions, a question is followed by two statements I and II. Give your answer

Question 146

What is the value of ab?
I. a + b = 9
II. | a - b | = 5

Solution

$$|a-b|=5$$ have two equations.

1. $$(a-b)=5$$

and

2. $$(b-a)=5$$

So, either $$a=7,b=2$$or$$a=2,b=7$$.

So both the statements are required to answer the question.

C is correct choice.

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What is the value of ab?I. a + b = 9II. | a - b | = 5