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একটি অ্যাকাউন্ট 12 Rs6 প্রতিটি ঋণ মুছে দেয়। স্বাক্ষরিত পরিবর্তন?

A−18
B18
C−72
D72
Answer & Solution
Correct answer: D. 72
দুটি নেতিবাচক কারণ একটি ধনাত্মক গুণফল দেয় এবং 12 × 6 = 72।
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