1, 3, 6, 10, 15, _______
91
81
71
41
21
31
200, 196, 180, 116, _______
-140
140
70
-280
-180
280
8, 27, 64, 125, 216, _______
243
143
443
343
543
643
3, 10, 20, 27, 37, _______
66
22
33
11
77
44
0.099, 0.99, 9.9, 99, 990,_______
99
9
990
9900
99000
990000
243, 162, 108, 72,_______
126
226
326
426
526
626
2, 6, 14, 30, 62, _______
26
Look at this series: 2, 1, (1/2), (1/4), ... What number should come next?
1/3
1/8
2/8
1/16
Look at this series: 7, 10, 8, 11, 9, 12, ... What number should come next?
7
10
12
13
Look at this series: 36, 34, 30, 28, 24, ... What number should come next?
20
23