Directions (1-5): Find the missing term in the following series.
1. 12, 12, 18, 45, 180, 1170, ? (1)
- (1) 12285
- (2) 10530
- (3) 11700
- (4) 12870
- (5) None of these
2. 1548, 516, 129, 43, ? (2)
- (1) 11
- (2) 10.75
- (3) 9.5
- (4) 12
- (5) None of these
3. 8, 36, 152, 620, 2496, 10004, ? (3)
- (1) 8190
- (2) 8187
- (3) 40040
- (4) 8163
- (5) None of these
4. 8, 10, 14.5, 22.5, 35, 53, ? (4)
- (1) 36
- (2) 54.25
- (3) 65
- (4) 77.5
- (5) 90
5. 18, 21, 16, 23, 12, 25, ? (2)
- (1) 24
- (2) 8
- (3) 14
- (4) 10
- (5) None of these