Series Set – 24

1. 12, 8, 11, 26, 112, 878, 14055
A) 8
B) 11
C) 26
D) 112
E) 878

Answer & Explanation

 Option D
Pattern:
12×0.5 + 2 = 8
8×1 + 3 = 11
11×2 + 4 = 26
26×4 + 5 = 109
109×8 + 6 = 878
878×16 + 7 = 14055

 

2. 12, 23, 40, 49, 67, 93, 135
A) 23
B) 40
C) 49
D) 67
E) 93

Answer & Explanation

 Option B
Pattern: 
12*2 – 1 = 23,
23*2 – 11 = 35,
35*2 – 21 = 49,
49*2 – 31 = 67,
67*2 – 41 = 93,
93*2 – 51 = 135

 

3. 2, 3, 4, 20, 152, 2434, 78304
A) 3
B) 4
C) 20
D) 152
E) 2434

Answer & Explanation

 Option E
Pattern:
2*1 + 1 = 3,
3*2 – 2 = 4,
4*4 + 4 = 20,
20*8 – 8 = 152,
152*16 + 16 = 2448
152*32 – 32 = 78304

 

4. 9, 5, 9, 25, 91, 424, 2282.5
A) 5
B) 9
C) 25
D) 91
E) 424

Answer & Explanation

 Option E
Pattern:
9*0.5 + 0.5 = 5,
5*1.5 + 1.5 = 9,
9*2.5 + 2.5 = 25,
25*3.5 + 3.5 = 91,
91*4.5 + 4.5 = 414
414*5.5 + 5.5 = 414

 

5. 3, 8, 16, 22.8, 35, 52, 75
A) 8
B) 16
C) 22.8
D) 35
E) 52

Answer & Explanation

 Option B
Pattern:
3…………8…………14.2…………..22.8…………..35………….52………..75
……+5 +6.2            +8.6…………….+12.2………+17…………23
………..+1.2           +2.4           +3.6                 +4.8         +6.0

 

6. 4, 3, 3, 9, 31, 129, 651
A) 3
B) 3
C) 9
D) 31
E) 129

Answer & Explanation

 Option A
Pattern:
4×0+ 1 = 1,
1×1 + 2 = 3,
3×2 + 3 = 9,
9×3 + 4 = 31,
31×4 + 5 = 129,
129×5 + 6 = 651    

 

7. 3, 7, 19, 35, 74, 153, 312
A) 7
B) 19
C) 35
D) 74
E) 153

Answer & Explanation

 Option B
Pattern:
3×2 + 1 = 7,
7×2 + 2 = 16,
16×2 + 3 = 35,
35×2 + 4 = 74,
74×2 + 5 = 153
153×2 + 6 = 312  

 

8. 4, 5, 13, 23, 59, 95, 193
A) 5
B) 13
C) 23
D) 59
E) 95

Answer & Explanation

 Option D
Pattern:
4*2 – 3 = 5,
5*2 + 3 = 13,
13*2 – 3 = 23,
23*2 + 3 = 49,
49*2 – 3 = 95,
95*2 + 3 = 193

 

9. 3, 8, 11, 19, 27, 30, 39
A) 8
B) 11
C) 19
D) 27
E) 30

Answer & Explanation

 Option B
Pattern:
3…………8…………15…………..19…………..27………..30………..39
……+5 +7               +4………….+8………..…+3…………9
………..+2             -3              +4               -5              +6

 

10. 8, 6, 14, 64, 440, 3960, 39489
A) 6
B) 14
C) 64
D) 440
E) 3960

Answer & Explanation

 Option E
Pattern:
8*1 – 2 = 6,
6*3 – 4 = 14,
14*5 – 6 = 64,
64*7 – 8 = 440,
440*9 – 10 = 3950
3950*10 – 11 = 39489

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