alleryএকটি ভরা কেসের ওজন 8.6 kg; খালি কেসের ওজন 1.4 kg। বিষয়বস্তুর ওজন?
A7.4 kg
B7.2 kg
C7.0 kg
D6.8 kg
Answer & Solution
Correct answer: B. 7.2 kg
বিষয়বস্তুর ওজন 8.6 − 1.4 = 7.2 কেজি।
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