Series Set – 3

1. 7, 23, 57, 109, 191, 307 
A) 191
B) 307
C) 109
D) 57
E) 23

Answer & Explanation

 Option D
Pattern: 

23 – 12, 33 – 22, 43 – 32, 53 – 42, ….

 

2. 128, 72, 96, 240, 840, 3780
A) 96
B) 72
C) 240
D) 3780
E) 840

Answer & Explanation

 Option B
Pattern: 

112×0.5, 56×1.5, 84×2.5, 210×3.5,

 

3. 145, 170, 195, 224, 252, 290 
A) 224
B) 170
C) 252
D) 195
E) 290

Answer & Explanation

 Option C
Pattern: 

122+1, 132+1, 142-1, 152-1, 162+1,

 

4. 23, 12, 13, 21, 44, 170, 340.5
A) 12
B) 13
C) 21
D) 44
E) 170

Answer & Explanation

 Option E
Pattern: 

11*0.5 + 0.5, 6*1 + 1, 7*1.5 + 1.5, 12*2 + 2, 26*2.5 + 2.5

 

5. 4, 5, 11, 39, 175, 1127, 7881 
A) 1127
B) 175
C) 5
D) 11
E) 39

Answer & Explanation

 Option B
Pattern: 

×2 – 3, ×3 – 4, ×4 – 5, ×5 – 6, ×6 – 7

 

6. 6, 9, 30, 90, 432, 2520 
A) 9
B) 432
C) 90
D) 30
E) 2520

Answer & Explanation

 Option D
Pattern: 

6×2 – 6/2, 9×3 – 9/3, 24×4 – 24/4, 90×5 – 90/5, 432×6 – 432/6

 

7. 10, 6, 14, 9, 32, 16, 80 
A) 9
B) 14
C) 6
D) 32
E) 16

Answer & Explanation

 Option B
Pattern: 

– 22, + 23, – 32, + 33, – 42,

 

8. 5760, 352, 40, 8, 6.5, 2.5 
A) 8
B) 6.5
C) 40
D) 352
E) 2.5

Answer & Explanation

 Option B
Pattern: 

5760/16 – 16/2 = 352
352/8 – 8/2 = 40
40/4 – 4/2 = 8
8/2 – 2/2 = 3
3/1 – 1/2 = 2.5

 

9. 6, 9, 23, 55, 92, 151, 229 
A) 151
B) 92
C) 55
D) 23
E) 229

Answer & Explanation

 Option C
Pattern: 

 

10. 8, 2, 2, 4.5, 25, 112.5, 1012.5
A) 1012.5
B) 112.5
C) 4.5
D) 25
E) None of these

Answer & Explanation

 Option D
Pattern: 

× 0.52, × 12, × 1.52, × 22, × 2.52

Leave a Comment

Your email address will not be published.