alleryউভয় প্রান্ত থেকে সংখ্যা জোড়া তৈরি করে, 1 + 2 + 3 + ... + 100 এর মান কত?
A5000
B5100
C5151
D5050
Answer & Solution
Correct answer: D. 5050
এখানে 50টি জোড়া রয়েছে, যার প্রতিটির যোগফল 101, সুতরাং মোট যোগফল হলো 50 x 101 = 5050।
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