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Each of the following question is follow...

Each of the following question is followed by three statements I, II and III. You have to study the question and the statements and decide which of the statements is/are necessary to answer the question.
What is the exact value of `(y ^(2))/( x ^(2)) + (z ^(2))/(y ^(2))`?
I `2x =z`
II`(y)/(x) - (z)/(y) = 6`
III `y ^(2) = xz.`

A

Only Statement I is sufficient to answer.

B

Statements II and III together are sufficient to answer.

C

All statements together are required to answer.

D

Statements I and ll together are sufficient to answer.

Text Solution

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The correct Answer is:
D
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