alleryবাস্তব সংখ্যার ক্ষেত্রে, যদি xy = 0 হয় তবে
Ax + y = 0
Bকেবল x = y
Cx = 0 অথবা y = 0
Dx = 1 অথবা y = 1
Answer & Solution
Correct answer: C. x = 0 অথবা y = 0
বাস্তব সংখ্যার গুণফল তখনই শূন্য হয় যখন অন্তত একটি উৎপাদক শূন্য হয়।
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