রাবেয়া একটি বালিকা শ্রেনির যে কোনো প্রান্ত থেকে একাদশ অবস্থানে আছে। শ্রেনিতে মোট বালিকার সংখ্যা কত?
A. 19
B. 20
C. 21
D. 22
সঠিক উত্তরঃ
C.
21
Explanation:
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