allery2 వద్ద ప్రారంభం; ప్రత్యామ్నాయ ×2+a, ఆపై ×3−b, a,b ప్రతి 1–4. సరిగ్గా మరో పదం తప్పు:2,8,19,41,121,245. దాని భర్తీ?
A6
B8
C9
D7
Answer & Solution
Correct answer: D. 7
కేవలం a=3,b=2 ఒక్క పదం మినహా అన్నింటికీ సరిపోతుంది, 2,7,19,41,121,245.
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