alleryक्या बिंदु (a, b) प्रथम चतुर्थांश में स्थित है? I: a > 0. II: b > 0.
Aदोनों एक साथ आवश्यक हैं
Bदोनों मिलकर भी पर्याप्त नहीं हैं
Cअकेले I पर्याप्त है
Dअकेले II पर्याप्त है
Answer & Solution
Correct answer: A. दोनों एक साथ आवश्यक हैं
प्रथम चतुर्थांश के लिए दोनों निर्देशांकों का धनात्मक होना आवश्यक है, इसलिए केवल एक का चिह्न पर्याप्त नहीं है।
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