# Aptitude Questions: Number Series Set 16

Hello Aspirants. Welcome to Online Quantitative Aptitude Section in AffairsCloud.com. Here we are creating question sample in Number Series, which is common for all the competitive exams. We have included Some questions that are repeatedly asked in bank exams !!!

1. 67, 68, 64, 73 , ?
A)57
B)53
C)65
D)73
Solution:
67+1^2 = 67+1 = 68
68-2^2 = 68-4 = 64
64+3^2 = 64+9 = 73
73-4^2 = 73-16 = 57

2. 131, 138, 154, 188 ?
A)243
B)249
C)224
D)232
Solution:
131+7 = 138………….(7)
138+16 = 154…………(7+9 = 16)
154+34 = 188…………(16+18 = 34)
188+61 = 249………..(34+27 = 61)

3. 657, 679, 712, 756, ?
A)814
B)824
C)811
D)921
Solution:
657+22 = 679
679+33 = 712
712+44 = 756
756+55 = 811

4. 27, 54, 324, 5832, ?
A) 341982
B) 314892
C) 341928
D) 314928
Solution:
27*2=54
54*6 =324…..(2*3 =6)
324*18 = 5832….(6*3)
5832*54 =314928….(18*3=54)

5. 39, 40, 162, 1461, ?
A)37231
B)23737
C)23380
D)27733
Solution:
39*1^2+1 = 39+1 = 40
40*2^2+2 = 40*4+2 = 162
162*3^2+3 = 162*9+3 = 1461
1461*4^2+4 = 23380

6. 23, 22, 40, 111, ?
A)428
B)563
C)462
D)436
Solution:
23*1 -1^2 = 23-1 = 22
22*2-2^2 = 44 – 4 = 40
40*3-3^2 = 120 – 9= 111
111*4-4^2 = 444-16 = 428

7. 13, 27, 83, 335, ?
A)1729
B)1679
C)1972
D)1277
Solution:
13*2+1 = 27
27*3+2 = 83
83*4+3 = 335
335*5+4 = 1679

8. 217, 221, 231, 249, ?
A)246
B)264
C)256
D)277
Solution:
217+(3^2-5) = 217+4 = 221
221+(4^2-6) = 221+10 = 231
231+(5^2-7) = 231+18 = 249
249+(6^2-8) = 249+28 = 277

9. 156, 76, 150, 73 ,144, ?
A)75
B)86
C)70
D)88
Solution:
156÷2-2 = 76
76*2-2 = 150
150÷2-2 = 73
73*2 – 2 = 144
144 ÷2-2 = 70

10. 1723, 1602, 1521, 1472, ?
A)1447
B)1432
C)1471
D)1747
Solution:
1723-11^2 = 1723 – 121 =1602
1602-9^2 = 1602-81 = 1521
1521-7^2 = 3248 – 49 = 1472
1472-5^2 = 3199-25 = 1447

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