Reasoning MCQs and Answers: Reasoning MCQs are very important for IBPS RRB PO-Clerk Prelims & Other State Exams. Aspirants who are willing to apply for the various Government exams 2022 must go through the topics of Reasoning for competitive exams, as the Reasoning is a key part of the syllabus.
Directions (1 – 15): In each of these questions a number series is given. In each series only one number is wrong. Find out the wrong number.
Q1. 15, 1015, 1096, 1608, 1657, 1870, 1898
(a) 1898
(b) 1096
(c) 1608
(d) 1870
(e) 15
S1. Ans. (d)
Sol.
Wrong number = 1870
Pattern of series –
15 + (10)3 = 1015
1015 + (9)2 = 1096
1096 + (8)3 = 1608
1608 + (7)2 = 1657
1657 + (6)3 = 1873
1873 + (5)2 = 1898
So, there should be 1873 in place of 1870.
Q2. 80, 81, 82, 86, 95, 111, 136
(a) 80
(b) 81
(c) 82
(d) 86
(e) 111
S2. Ans. (a)
Sol.
Wrong number= 80
81+(0)2 = 81
81+(1)2 = 82
82+(2)2 =86
86 +(3)2=95
95+(4)2=111
111+(5)2=136
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Q3. 3, 12, 30, 56, 90, 132, 182
(a) 3
(b) 30
(c) 12
(d) 56
(e) 90
S3. Ans(a)
Sol.
Here the pattern is:
1×2 = 2
3×4 = 12
5×6 = 30
7×8 = 56
9×10 = 90
11×12 = 132
1314182
So, 3 is the wrong term.
Q4. 1, 9, 36, 81 144, 225
(a) 9
(b) 36
(c) 81
(d) 1
(e) 144
S4. Ans(d)
Sol.
Here the pattern is:
02 =0
32 = 9
62 = 36
92 = 81
122 = 144
152 = 225
So, 1 is the wrong term.
Q5. -27, -15, -5, 3, 9, 14
(a) 3
(b) 9
(c) 14
(d) -5
(e) -15
S5. Ans(c)
Sol.
Here the pattern is:
-27+12 = -15
-15+10 = -5
-5+8 = 3
3+6 = 9
9+4 = 13
So, 14 is the wrong number.
Q6. 2194, 1725, 1328, 997, 726, 510
(a) 1725
(b) 997
(c) 510
(d) 1328
(e) 2194
S6. Ans(c)
Sol.
Here the pattern is:
133– 3 = 2194
123 – 3 = 1725
113 – 3 = 1328
103 – 3 = 997
93 – 3 = 726
83 -3 = 509
So, 510 is the wrong number.
Q7. 21, 42, 126, 504, 2525, 15120
(a) 15120
(b) 2525
(c) 504
(d) 126
(e) 21
S7. Ans(b)
Sol.
Here the pattern is:
21×2 = 42
42×3 = 126
126×4 = 504
504×5 = 2520
2520×6 = 15120
So, 2525 is the wrong term.
Q8. 12, 17, 32, 77, 212, 615, 1832
(a) 77
(b) 1832
(c) 12
(d) 17
(e) 615
S8. Ans. (e)
Sol.
Wrong number = 615
Pattern of series –
So, there should be 617 in place of 615.
Q9. 97, 108, 205, 313, 518, 831, 1347
(a) 97
(b) 1347
(c) 518
(d) 205
(e) 108
S9. Ans. (b)
Sol.
Wrong number = 1347
Pattern of series –
97 + 108 = 205
108 + 205 = 313
205 + 313 = 518
313 + 518 = 831
518 + 831 = 1349
So, there should be 1349 in place of 1347.
Q10. 53, 82, 113, 146, 181, 220
(a) 53
(b) 82
(c) 220
(d) 146
(e) 181
S10. Ans(c)
Sol.
Here the pattern is:
53+29 = 82
82+31=113
113+33 = 146
146+35 = 181
181+37 = 218
So, 220 is the wrong term.
Q11. 120, 83, 113, 93, 105, 99, 101
(a) 120
(b) 101
(c) 99
(d) 83
(e) 93
S11. Ans. (a)
Sol.
Wrong number = 120
Pattern of series –
125- 6 X 7=83
So, there should be 125 in place of 120.
Q12. 1, 2, 6, 21, 88, 445, 2675
(a)445
(b)2675
(c)88
(d)21
(e)1
S12. Ans. (b)
Sol.
Wrong number = 2675
Q13. 88, 44, 178, 88, 352,176,704
(a)88
(b)44
(c)352
(d)178
(e)704
S13. Ans. (d)
Sol.
Wrong number= 178
Q14. 1, 4, 18, 48, 100, 180
(a) 180
(b) 18
(c) 48
(d) 4
(e) 1
S14. Ans(e)
Sol.
Here the pattern is:
13 – 12 = 0
23 – 22 = 4
33 – 32 = 18
43 – 42 = 48
53 – 52 = 100
63 – 62 = 180
So, 1 is the wrong term.
Q15. 225, 325, 244, 308, 259, 295, 271
(a)225
(b)325
(c)244
(d)295
(e) 271
S15. Ans. (e)
Sol.
Wrong number= 271
225+(10)2=325
325-(9)2=244
244+(8)2=308
308-(7)2=259
259+(6)2=295
295-(5)2=270
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