| Direction: What should come in place of question mark (?) in the following number series? | |||||
| 8 | 12 | 30 | ? | 472.5 | 2598.75 |
A) 104
B) 103
C) 106
D) 105
E) Other than given as options
Correct Answer: D
Solution :
The series is\[\times 1.5,\,\,\times 2.5,\,\,\times 3.5,\,\,\times 4.5,\,\,\times 5.5,\,\,...\] i.e.\[8\times 1.5=12,\,\,12\times 2.5=30,\] \[30\times 3.5=105,\,\,105\times 4.5=472.5,\] \[472.5\times 5.5=2598.75,\,\,...\]
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