Consider the following question and decide which of the statements is sufficient to answer the question.

Find the value of z,

**Statements:**

1. z^{2} = 36 + a

2. a = x^{2} and x = 8

This question was previously asked in

RRC Group D Previous Paper 19 (Held On: 10 Dec 2018 Shift 2)

- Either 1 or 2 is sufficient
- Both 1 and 2 are sufficient
- Only 1 is sufficient
- Only 2 is sufficient

Option 2 : Both 1 and 2 are sufficient

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RRC Group D Full Mock Test

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100 Questions
100 Marks
90 Mins

From the statement 1

z^{2} = 36 + a

From the statement 2

a = x^{2} and x = 8

⇒ a = 8 × 8

⇒ a = 64

z^{2} = 36 + 64 = 100

⇒ z = √100

⇒ z = 10

Now, we can say both statement are sufficient to give the answer.
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