Read the given question and decide which of the following equations is/are sufficient to answer the question.
Question:
What is the value of x?
Equations:
1. x2 – 18x + 81 = 0
2. p + q + r = 0
1
Only 1 is sufficient
2
Either 1 or 2 is sufficient
3
Neither 1 nor 2 is sufficient
4
Only 2 is sufficient