allery3, 9, 5, 7, 11, 1 এবং 13-এর মধ্যমা কত?
A5
B7
C9
D11
Answer & Solution
Correct answer: B. 7
1, 3, 5, 7, 9, 11, 13 ক্রমে সাজালে সাতটি মানের মধ্যে চতুর্থ মানটি হলো 7।
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