alleryকোন পূর্ণবর্গ সংখ্যাটি ত্রিভুজাকার সংখ্যা 6 এবং 10-এর যোগফল?
A18
B16
C14
D20
Answer & Solution
Correct answer: B. 16
দুটি ধারাবাহিক ত্রিভুজাকার সংখ্যার যোগফল একটি পূর্ণবর্গ সংখ্যা, এবং 6 + 10 = 16, যা 4-এর বর্গ।
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