Question

Read the following question and decide which of the statements is/are sufficient to answer the question.

Find the value of 'n'.

Statements:

1) n² - 20n + 100 = 0

2) n² + x² + y² + 2 = 2n + 5

A Only statement 2 is sufficient Correct Answer Incorrect Answer
B Only statement 1 is sufficient Correct Answer Incorrect Answer
C Neither statement 1 nor 2 is sufficient Correct Answer Incorrect Answer
D Either statement 1 or 2 is sufficient Correct Answer Incorrect Answer

Solution

From I. n² - 20n + 100 = 0 (n – 10)² = 0 n = 10, 10 So, statement I is sufficient. From II. As, it includes more variable than equation. So, statement II is not sufficient.

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