Number Patterns

This week's Columbus State University's Math contests are about number patterns.

Problem of the Week:
0, -2, -2, 0, 4, 10, ___, ___

Algebra in Action:
1.5, 1.0, 0.83, 0.75, 0.7, ___, ___

Middle School Madness:
1, 4, 9, 61, 52, 63, 94, ___, ___

Elementary Brain Teaser:
2, 5, 11, 17, 23, 31, 41, 47, ____, ____

Algebra in Action's pattern is more challenging than the rest as only about 1/4 of participants got the answer correct. You should be able to get the other 3 answers quickly. Just in case you can't solve the challenging one, check the solution here by highlighting the text -> 1.5 (3/2), 1.0 (4/4), 0.83 (5/6), 0.75 (6/8), 0.7 (7/10), 0.67 (8/12), 0.64 (9/14)