6. | Look at this series: 21, 9, 21, 11, 21, 13, 21, ... What number should come next? | |||||||
|
7. | Look at this series: 58, 52, 46, 40, 34, ... What number should come next? | |||||||
|
8. | Look at this series: 3, 4, 7, 8, 11, 12, ... What number should come next? | |||||||
|
10. | Look at this series: 31, 29, 24, 22, 17, ... What number should come next? | |||||||
|