UPSC NDA II 2023 Mathematics Solved Paper
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Question : 83 of 120
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Given that 16 p 2 + 49 q 2 − 4 r 2 − 56 p q = 0 Which one of the following is a point on a pair of straight lines ( px + qy + r ) ( px + qy − r ) = 0 ?
[NDA II 2023]
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