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UPSC CDS I 2024 Math Paper

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Question : 58

Total: 100

If P² varies as R and Q² varies as R, (P ≠ Q), then which of the following are correct?
1. P2 + Q2 varies as R.
2. PQ varies as R.
3. P2 - Q2 varies as R.
Select the correct answer using the code given below:

1 and 2 only
2 and 3 only
1 and 3 only
1, 2 and 3

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