alleryপাঁচটি সংখ্যার গড় 18। এদের সমষ্টি কত?
A95
B85
C80
D90
Answer & Solution
Correct answer: D. 90
সমষ্টি সমান গড় গুণ মোট সংখ্যা, সুতরাং 18 x 5 = 90।
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