Find the number that fits somewhere into the middle of the series. Some of the items involve both numbers and letters 1. Look at this series: F2, __, D8, C16, B32, … What number should fill the blank? (3)
- 1. A16
- 2. G4
- 3. E4
- 4. E3
2. Look at this series: 664, 332, 340, 170, ____, 89, … What number should fill the blank? (4)
- 1. 85
- 2. 97
- 3. 109
- 4. 178
3. Look at this series: V, VIII, XI, XIV, __, XX, … What number should fill the blank? (4)
- 1. IX
- 2. XXIII
- 3. XV
- 4. XVII
4. Look at this series: 70, 71, 76, __, 81, 86, 70, 91, … What number should fill the blank? (1)
- 1. 70
- 2. 71
- 3. 80
- 4. 96
5. Look at this series: 8, 43, 11, 41, __, 39, 17, … What number should fill in the blank? (2)
- 1. 8
- 2. 14
- 3. 43
- 4. 44