alleryএকটি সংখ্যা 5 দ্বারা বিভাজ্য হলে তার শেষ স্থানে কোন অঙ্কটি অবশ্যই থাকতে হবে?
A0 অথবা 5
B5 অথবা 6
C2 অথবা 5
D1 অথবা 5
Answer & Solution
Correct answer: A. 0 অথবা 5
একটি সংখ্যা শুধুমাত্র তখনই 5-এর গুণিতক হয় যখন তার শেষ অঙ্কটি 0 অথবা 5 হয়।
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