allery2 ৰ পৰা আৰম্ভ কৰক; বিকল্পভাৱে ×2+a, তাৰ পিছত ×3−b, a,b প্ৰতিটো 1–4 ৰ সৈতে। ঠিক আন এটা শব্দ ভুল:2,8,19,41,121,245। ইয়াৰ সলনি?
A6
B8
C9
D7
Answer & Solution
Correct answer: D. 7
মাত্ৰ a=3,b=2 এটা পদৰ বাহিৰে সকলো পদৰ বাবে উপযুক্ত, যাৰ ফলত 2,7,19,41,121,245 পোৱা যায়।
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