In the following number series only one number is wrong. Find out the wrong number.484, 240, 120, 57, 26.5, 11.25, 3.625
Question
In the following number series only one number is wrong. Find out the wrong number.484, 240, 120, 57, 26.5, 11.25, 3.625
Solution
The given series is a decreasing series. Let's try to find the pattern:
484 / 2 = 242 242 / 2 = 121 121 / 2 = 60.5 60.5 / 2 = 30.25 30.25 / 2 = 15.125 15.125 / 2 = 7.5625 7.5625 / 2 = 3.78125
Comparing this with the given series, we can see that the number 57 is out of place. It should be 60.5 according to the pattern. So, the wrong number in the series is 57.
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