there is one element missing in this series 2'7'14'23?47
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The element that is missing is 34 in the series.
In the given sequence the next number is decided by the formula n^2 -2.
Here the first number is 2.
After 2 we get
3^2 – 2 = 7, 4^2 – 2 = 14, 5^2 – 2 = 23, 6^2 – 2 = 34 and 7^2 – 2 = 47
Therefore the total sequence is 2, 7, 14, 23, 34 and 47.
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