Discussion :: Odd Man Out and Series
- Complete the series 2, 5, 9, 19, 37.......
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Answer : Option C
Explanation :
The second number is one more than twice the first,
2 x 2 +1 = 5
The third number is one less than twice the second,
5 x 2 -1 = 9
The fourth number is one more than twice the third,
9 x 2 +1 = 19
The fifth number is one less than twice the fourth.
19 x 2 - 1 = 37
Therefore, the sixth number is one more than twice the fifth. So, the missing number:
37 x 2 + 1 = 75.
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