Question 22
What is the 30th number in the pattern?
1, 4, 7, 9, 1, 4, 7, 9, 1, 4, …
Pattern task: use a simple rule consistent with all the displayed examples. Finite examples alone do not formally specify every possible continuation.

1, 4, 7, 9, 1, 4, 7, 9, 1, 4, …
Pattern task: use a simple rule consistent with all the displayed examples. Finite examples alone do not formally specify every possible continuation.
