IBM Number Series Questions & Answers For Freshers | Number Series Placement Paper Question And Answers In IBM: You’ve come to the right place if you’re a student looking for the greatest learning platform to get a career. The IBM Number Series Questions and Answers with Explanation are presented on this page.
Number Series topics are particularly essential in IBM written tests. As a result, candidates who want to learn IBM Number Series Questions and Answers For Freshers can use this part to practice. Competitors can get a sense of the difficulty level of questions that may be asked on the exam by studying IBM Number Series Questions and Solutions. These are IBM model questions, therefore they aren’t accurate. Because the questions vary from exam to exam, no one can provide accurate answers.
Contents
IBM Number Series Questions & Answers For Freshers Complete Overview
- Number of Questions: 18
- Time Limit: 40 mins
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IBM Number Series Questions & Answers Given Below
Competitors who enjoy solving problems and taking on new challenges may put their skills to the test by practicing IBM Number Series Questions and Solutions. To get the most points, applicants must be able to answer all of the questions.
1. 1.5, 2.3, 3.1, ?, 4.7
A. 3.2
B. 3.4
C. 3.7
D. 3.9
Answer – D. 3.9
Explanation:
However, In this simple addition series, each number increases by 0.8.
2. 544, 509, 474, 439, ?
A. 420
B. 404
C. 414
D. 445
Answer – B. 404
Explanation: If you observe, Each number is 35 less than the previous number.
3. Find the wrong number in the given sequence
31, 2, 41, 3, 52, 4, 61, 5, 71, 6
A. 41
B. 61
C. 52
D. 31
Answer – C. 52
Explanation:
In this sequence, there is a combination of two given series:
I. 31, 41, 52, 61, 71 and II. 2, 3, 4, 5, 6
Here, the pattern in I is + 10
Therefore, 52 is wrong and should be replaced by the previous number 41+10 = 51.
4. Find the wrong number in the given sequence
10, 5, 19, 12, 39, 26, 73, 54
A. 19
B. 39
C. 5
D. 26
Answer – B. 39
Explanation:
The sequence is a combination of the following two series:
I. 10, 19, 39, 73, and II. 5, 12, 26, 54
The pattern in I becomes + 9, + 18, + 36
According to the series, 37 is the correct number.
Hence, 39 is the wrong number
5. 5, 21, 69, 213, 645, ?
A. 1935
B. 1815
C. 1941
D. 1290
Answer – C. 1941
Explanation:
5
5 x 3 + 6 = 21
21 x 3 + 6 = 69
69 x 3 + 6 = 213
213 x 3 + 6 = 645
645 x 3 + 6 = 1941.
Therefore, the next number in the series is 1941.
6. 496, 492, 483, 467, ?
A. 431
B. 462
C. 437
D. 442
Answer – D. 442
Explanation:
496 – 492 = 4 = 22
492 – 483 = 9 = 32
483 – 467 = 16 = 42
So, the next has to be a difference of 25 = 52
467 – 25 = 442
Therefore, the next number in the given series is 442.
7. 8(97)6, 4(56)5, 6(75)4, 7(?)8
A. 98
B. 89
C. 88
D. 97
Answer – B. 89
Explanation:
If we observe, In 8(97)6 we can have 97- 86 = 11
4(56)5 we can have 56 – 45 = 11
6(75)4 we can have 75 – 64 = 11
So, the difference is 11.
? – 78 = 11
Hence, ? = 78+11 = 89
8. 2, 1, (1/2), (1/4), ?
A. (1/8)
B. (2/8)
C. (1/16)
D. (1/3)
Answer – A. (1/8)
Explanation:
This is a simple division series; each number is one-half of the previous number. In other terms to say, the number is divided by 2 successively to get the next result.
2
2/2 = 1
1/2 = 1/2
(1/2)/2 = 1/4
(1/4)/2 = 1/8
So, ? is (1/8).
9. Find the wrong number in the given series
1, 125, 729, 2177
A. 1
B. 125
C. 729
D. 2177
Answer – D. 2177
Explanation:
Given 1, 125, 729, 2177
Let’s assume 1 = 13 , 125 = 53, 729 = 93.
However, the number difference is 40
So, the next number would be 133= 2197
Therefore, 2177 is wrong.
10. 1023, 987, 915, 807, ?
A. 563
B. 543
C. 636
D. 663
Answer – D. 663
Explanation:
1023 – 36 = 987
987 – 72 = 915
915 – 108 = 807
807 – 144 = 663
11. 460, 92, 36.8, 22.08, ?
A. 17.664
B. 18.44
C. 16.33
D. 10.56
Answer – A. 17.664
Explanation:
460*(1/5) = 92
92*(2/5) = 36.8
36.8*(3/5) = 22.08
22.08*(4/5) = 17.664
12. 8, 4, 4, 6, 12, ?
A. 39
B. 27
C. 24
D. 30
Answer – D. 30
Explanation:
8*(1/2) = 4
4*(1) = 4
4*(3/2) = 6
6*(2) = 12
12*(5/2) = 30
13. 15 , 22, 72, 552 , ?
A. 8800
B. 4763
C. 4500
D. 4592
Answer – A. 8800
Explanation:
15×2 – 8 = 22
22×4 – 16 = 72
72×8 – 24 = 552
552×16 – 32 = 8800
14. 69, 77.28, 86.55, 96.936, ?
A. 102.546
B. 108.568
C. 105.675
D. 119.876
Answer – B. 108.568
Explanation:
69 + (12*69/100) = 69 + 8.28 = 77.28
77.28 + (12*77.28/100) = 77.28 + 9.27 = 86.55
86.55 + (12*86.55/100) = 86.55 +10.386 = 96.936
96.936 + 11.632 = 108.568
15. 980, 147, 28, 11, 8.57, ?
A. 10.765
B. 8.224
C. 5.675
D. 12.653
Answer – B. 8.224
Explanation:
980/7 + 7 = 147
147/7 +7 = 28
28/7 + 7 = 11
11/7 + 7 = 8.57
8.57 /7 +7 = 8.224
16. 10 16.5 43.75 156.625 ?
A. 709.3125
B. 809.3125
C. 699.3125
D. 609.3125
E. None of these
Answer – A. 709.3125
Explanation:
10*1.5 + 1.5 = 16.5
16.5*2.5 + 2.5 = 43.75
43.75*3.5 + 3.5 = 156.625
156.625*4.5 + 4.5 = 709.3125
17. 100 125 225 450 850 ?
A. 1375
B. 1275
C. 1475
D. 1575
E. None of these
Answer – C. 1475
Explanation :
100 + 5^2 = 125
125 + 10^2 = 225
225 + 15^2 = 450
450 + 20^2 = 850
850 + 25^2 = 1475
18. 460, 92, 36.8, 22.08, ?
A. 17.664
B. 18.44
C. 16.33
D. 10.56
Answer – A. 17.664
Explanation:
460*(1/5) = 92
92*(2/5) = 36.8
36.8*(3/5) = 22.08
22.08*(4/5) = 17.664
Therefore, the next number in the series is 17.664
