alleryক্ষুদ্রতম কোন অঙ্ক x-এর জন্য 52x সংখ্যাটি 3 দ্বারা বিভাজ্য হবে?
A3
B1
C2
D0
Answer & Solution
Correct answer: C. 2
5 এবং 2 অঙ্ক দুটির যোগফল 7, এবং এর সাথে 2 যোগ করলে 9 হয়, যা 3 দ্বারা বিভাজ্য; 0 এবং 1 যোগ করলে যথাক্রমে 7 এবং 8 পাওয়া যায়।
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