9, 19, 40, ?, 170
A.
B.
C.
D.
Answer & Solution
Solution:
The number series follows the following rule
1st
number = 9
2nd number = 9x2+1 = 19
3rd number = 19x2+2 = 40
4th number = 40x2+3 = 83
5th number = 83x2+4 = 170
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