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Instructions
In each of the following questions, find out the wrong number in the series.
Solution
here we need to find the odd one out in 27, 81, 1331, 125
as we know
27 = 3^3
81 = 3^4
1331 = 11^3
125 = 5^3
here we can clearly see that 81 is the only number which is not a perfect cube and hence 81 is the odd one out
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