alleryচার বছরে লক্ষ টাকায় মুনাফা ছিল 12, 15, 9 এবং 18। কোন বছরে হ্রাস ঘটেছিল?
Aবছর 1
Bবছর 2
Cবছর 3
Dবছর 4
Answer & Solution
Correct answer: C. বছর 3
তৃতীয় বছরে মুনাফা 15 থেকে কমে 9 হয়েছিল, যা এই শ্রেণির একমাত্র হ্রাস।
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