A) 42
B) 58
C) 90
D) 120
Correct Answer: D
Solution :
Terms taken alternately form two sequences. These are 3, 24, 63? 6, 30, 72, 132 \[3={{2}^{2}}-1\] \[6={{2}^{2}}+2\] \[24={{5}^{2}}-1\] \[30={{5}^{2}}+5\] \[63={{8}^{2}}-1\] \[72={{8}^{2}}+8\] Next term \[={{11}^{2}}-1\,=120\]
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