Question : Directions: Select the number that does not belong to the given series.
2, 8, 3, 27, 4, 64, 5, 225
Option 1: 27
Option 2: 8
Option 3: 225
Option 4: 64
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Correct Answer: 225
Solution :
Given:
2, 8, 3, 27, 4, 64, 5, 225
In the given series, the numbers at the odd positions are increased by 1 and even position numbers are cubes of its preceding number.
(2)
3
= 8, 2 + 1 = 3, (3)
3
= 27, 3 + 1 = 4, (4)
3
= 64, 4 + 1 = 5, (5)
3
= 125 ≠ 225
So, 225 is the wrong term in the given series. Hence, the third option is correct.
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