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کیا ax + b = 0 کا بالکل ایک حل ہے؟ I: a = 3۔ II: b = 0۔

Aصرف II ہی کافی ہے۔
Bنہ ہی، یہاں تک کہ ایک ساتھ
Cدونوں کو ایک ساتھ درکار تھا۔
Dصرف I کافی ہے۔
Answer & Solution
Correct answer: D. صرف I کافی ہے۔
ایک غیر صفر عددی a کے ساتھ، مساوات کا واحد جڑ ہے -b/a جو بھی b ہے۔
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