| 3 | 7 | 23 | 71 | 191 | 463 |  |
A) 864
B) 2046
C) 1047
D) 976
Correct Answer: C
Solution :
\[3\xrightarrow{\times 2+{{1}^{2}}}7\xrightarrow{\times 2+{{3}^{2}}}23\xrightarrow{\times 2+{{5}^{2}}}71\xrightarrow{\times 2-{{7}^{2}}}191\] \[\xrightarrow{\times 2+{{9}^{2}}}463\xrightarrow{\times 2+{{11}^{2}}}\]
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