Series Set – 13

1. 122, 168, 226, 288, 362, ?
A) 440
B) 465
C) 466
D) 445
E) 460

Answer & Explanation

 Option A
Pattern:
112 + 1 = 122
132 – 1 = 168
152 + 1 = 226
172 – 1 = 288
192 + 1 = 362
212 – 1 = 440

 

2. 2, 16, 54, 128, 250, ?
A) 441
B) 339
C) 432
D) 454
E) 390

Answer & Explanation

 Option C
Pattern:
12*2, 22*4, 32*6, 42*8, 52*10, 62*12

 

3. 2, 5, 21, 63, ?, 355
A) 141
B) 157
C) 129
D) 125
E) 130

Answer & Explanation

 Option B
Pattern:
*2 + 1, *2 + 11, *2 + 21, *2 + 31,*2 + 41

 

4. 5, 3, 3, 5, 15, 69, ?
A) 412
B) 568
C) 466
D) 545
E) 407

Answer & Explanation

 Option E
Pattern:
5*1 – 2, 3*2 – 3, 3*3 – 4, 5*4 – 5, 15*5 – 6, 69*6 – 7

 

5. 2, 3, 4, 20, ?, 920
A) 216
B) 233
C) 114
D) 335
E) 133

Answer & Explanation

 Option C
Pattern:
*1 + 1, *2 – 2, *4 + 4, *6 – 6, *8 + 8.

 

6. 7, 3, 3, 5, 14, ?
A) 41.5
B) 45.5
C) 58.5
D) 44.5
E) 36.5

Answer & Explanation

 Option C
Pattern:
*0.5 – 0.5, *1.5 – 1.5, *2.5 – 2.5, *3.5 – 3.5, *4.5 – 4.5

 

7. 6, 60, 210, 504, 990, ?
A) 1718
B) 1611
C) 1721
D) 1615
E) 1716

Answer & Explanation

 Option E
Pattern:
23 – 2, 43 – 4, 63 – 6, 83 – 8, 103 – 10

 

8. 6, 4, 8, 34, 230, ?
A) 2070
B) 2020
C) 2050
D) 2060
E) 2080

Answer & Explanation

 Option D
Pattern:
*1 – 2, *3 – 4, *5 – 6, *7 – 8, *9 – 10.

 

9. 4, 5, 13, 23, 49, ?
A) 95
B) 72
C) 66
D) 85
E) 77

Answer & Explanation

 Option A
Pattern:
*2 – 3, *2 + 3, *2 – 3, *2 + 3, *2 – 3

 

10. 1, 5, 13, 25, 41, ?
A) 81
B) 75
C) 72
D) 61
E) 65

Answer & Explanation

 Option D
Pattern:
02 + 12, 12 + 22, 22 + 32, 32 + 42

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