In following number series, two terms have been put within brackets. Choose the appropriate option
2 , 5 , 9 , 19 , 37 , x
Option:
A. 76
B. 75
C. 74
D. 72
Answer: B . 75
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Justification:
The second number is one more than twice the first ;
third number is one twice second ;
fourth number is one more then twice the third ;
fifth number is one less then twice the fourth.
Thus the sixth number is one more than twice the fifth.
