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পাঁচটা সংখ্যাৰ মাধ্য 18। সেইবোৰৰ যোগফল কিমান?

A95
B85
C80
D90
Answer & Solution
Correct answer: D. 90
যোগফল মাধ্য আৰু সংখ্যাৰ গুণফলৰ সমান, গতিকে 18 x 5 = 90।
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