Question

One does not follow the pattern.

(–3, –11), (0, 1), (1, 5), (3, 13), (4, 19), (5, 21)

I know its 4,19 but why?

Answer 1

It's 4 I'm not sure about 19 but this why its 4

Explanation:

All of the numbers are odd numbers and 4 is an even number (19 is not an even number and I don't know why)

I hope this helped atleast a little bit