Series Set – 23

1. 4, 31, 156, 499, 1228, ?
A) 2669
B) 2559
C) 2549
D) 2649
E) 2369

Answer & Explanation

 Option B
Pattern
:
+33 , +53, +73 , +93, +113

 

2. 3, 10, 20, 39, 85, ?
A) 101
B) 135
C) 212
D) 232
E) 196

Answer & Explanation

   Option C
Pattern
:
Difference of difference
3,,,,,,, 10,,,,,,,,, 20,,,,,,,,,,, 39,,,,,,,,,, 85,,,,,,,,,,,,, ?
,,,,,7,,,,,,,10,,,,,,,,,,,,,19,,,,,,,,,,46,,,,,,,,,,,(127)
,,,,,,,,,,3,,,,,,,,,,,,9,,,,,,,,,,,,27,,,,,,,,,(27*3=81)
?=85+81+46=212

 

3. 6, 4, 5, 11, ?, 361
A) 34
B) 44
C) 45
D) 47
E) 55

Answer & Explanation

  Option C
Pattern
:
*0.5+1,*1+1,*2+1,*4+1,*8+1

 

4. 7, 9, 21, 67, 273, ?
A) 1226
B) 1107
C) 1345
D) 1320
E) 1371

Answer & Explanation

  Option E
Pattern
:
*1+2,*2+3,*3+4,*4+5,*5+6

 

5. 152, 156, 140, 176, 112, ?
A) 156
B) 216
C) 210
D) 212
E) 245

Answer & Explanation

 Option D
Pattern
:
+22 , -42, +62 , -82 , +102
 

 

6. 6, 14, 78, 294, 806, ?
A) 1703
B) 1720
C) 1856
D) 1806
E) 1904

Answer & Explanation

  Option D
Pattern
:
+23 , +43, +63 , +83, +103  

 

7. 4, 12, 22, 36, 58, ?
A) 100
B) 102
C) 96
D) 94
E) 90

Answer & Explanation

 Option C
Pattern
:
4,,,,,,, 12,,,,,,,,, 22,,,,,,,,,,, 36,,,,,,,, 58,,,,,,,,, ?
,,,,,,8,,,,,,,,,10,,,,,,,14,,,,,,,,,,,,22,,,,,,,,,,,(38)
,,,,,,,,,,,2,,,,,,,,,,4,,,,,,,,,,8,,,,,,,,,,,(16)
?=58+22+16

 

8. 8, 6, 8, 18, ?, 594
A) 60
B) 62
C) 64
D) 74
E) 76

Answer & Explanation

 Option D
Pattern
:
*0.5 +2, *1+2,*4+2,*8+2.

 

9. 9, 11, 25, 79, 321, ?
A) 1512
B) 675
C) 876
D) 1611
E) 1745

Answer & Explanation

 Option D
Pattern
:
*1+2, *2+3, *3+4, *4+5, *5+6

 

10. 102, 111, 86, 135, 54, ?
A) 145
B) 165
C) 170
D) 175
E) 180

Answer & Explanation

 Option D
Pattern
:
+32 , -52, +72 , -92 , +112

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