allery5, 7, 9, 11, 13 তথ্যগুলি সমান্তর প্রগতিতে রয়েছে। এদের মধ্যমা কত?
A9
B8
C11
D7
Answer & Solution
Correct answer: A. 9
ক্রমানুসারে সাজানো পাঁচটি মানের মধ্যবর্তী মান হলো 9, যা গড় 45/5-এর সমানও।
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