Which of the numbers given below is the odd one out in the given sequence?
1, 8, 27, 64, 125, 216, 343, 512, 727, 1000
Correct Answer :
727
Solution :
The correct option is 727.
To find the odd one out in the given sequence, let us analyze the pattern formed by each number in the series:
1, 8, 27, 64, 125, 216, 343, 512, 727, 1000
Let us express each term as a cube of consecutive natural numbers:
As we can see, every number in the sequence except 727 is a perfect cube of a natural number. The 9th term should be instead of 727.
Therefore, 727 is the odd one out in the sequence.
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