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Find the odd one in the number series given below ? 17, 9, 10, 18.5, 35, 90

Correct Answer: 18.5

Explanation:

The given series pattern follows


 


17       9       10       18.5       35       90


 


× 0.5 + 0.5,   × 1 + 1,   × 1.5 + 1.5,   × 2 + 2,   × 2.5 + 2.5


 


So here 


 


17x0.5 + 0.5 = 9


 


9x1 + 1 = 10


 


10x1.5 + 1.5 = 16.5


 


16.5x2 + 2 = 35


 


35x2.5 + 2.5 = 90


 


Here the odd man in the given series is 18.5


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