find the next sequence
2) 1, 4, 9, 16 , ________ , ________
Rule: _______________________

3) 5, 3, 1, -1, _________, _________

Rule: ________________________

4) 10, 15, 20, 25, ________, _________
Rule: _______________________

5) 1, 5, 9, 13, _________, _________

Rule: ______________