Q.250 : दीर्घवृत 7x² + 16 y² = 112 की उत्केन्द्रता है?

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Q.250 : दीर्घवृत 7x² + 16 y² = 112 की उत्केन्द्रता है?
(a) 3/√7
(b) 4/√7
(c) 3/4
(d) 4/3

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Answer :3/4

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