Number Series for IBPS CWE PO - VI Prelim Exam (Set-1)

Published on Wednesday, October 12, 2016
Directions (Qus. 1-5): What will come in place of question mark (?) in the following number series?

1. 1, 7,  49,  343, (?)
a) 16807
b) 1227
c) 2058
d) 2401
e) None of these


2. 13,  20, 39, 78, 145, (?)
a) 234
b) 244
c) 236
d) 248
e) None of these

3. 12        35        81        173        357        (?)
a) 725
b) 715
c) 726
d) 736
e) None of these

4. 3, 100, 297, 594, 991, (?)
a) 1489
b) 1479
c) 1478
d) 1498
e) None of these

5. 112, 119, 140, 175, 224, (?)
a) 277
b) 276
c) 287
d) 266
e) None of these


Answers:

1. d.) 2401

Solution:
1 x 7 = 7
7x 7 = 49
49 x 7 = 343
343 x 7 = 2401
 
2. d) 248

Solution:
13+12^2+3, 20+ 4^2+3, 39+6^2+3, 78+8^2+3, 145+ 10^2+3
 
3. a) 725

Solution:
difference x 2
 
4. e) none

Solution:
+97,+197+297,+397,+497

991+497 = 1488

5. c) 287

Solution:
+ 7x1, +7x3, +7x5, +7x7, +7x9

Thanks.

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ramandeep singh

My name is Ramandeep Singh. I authored the Quantitative Aptitude Made Easy book. I have been providing online courses and free study material for RBI Grade B, NABARD Grade A, SEBI Grade A and Specialist Officer exams since 2013.

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