Question

there is one element missing in this series 2'7'14'23?47

Answer 1

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.