Number Series problems
- 1. Find the next number in the series 265, 269, 278, 284, ?
Options- A. 309
- B. 319
- C. 298
- D. 415 Also asked in: GATE, CAT, Bank Exams, AIEEE, Bank PO, Bank Clerk
Correct Answer: 309
Explanation:
The pattern in the given series is +4, +9, +16, +25, ... i.e.
The next number is 284+25 = 309.
- 2. Find the next number in the given number sequence? 9, 19, 21, 43, 45, ...
Options- A. 88
- B. 54
- C. 91
- D. 49 Also asked in: AIEEE, Bank Exams, CAT, GATE, Analyst, Bank Clerk, Bank PO
Correct Answer: 91
Explanation:
The given number series 9, 19, 21, 43, 45, ... follows a pattern that
ALternately (x 2 + 1) and (x 1 + 2)
9
9 x 2 + 1 = 19
19 x 1 + 2 = 21
21 x 2 + 1 = 43
43 x 1 + 2 = 45
45 x 2 + 1 = 91
Hence, the next number in the given sequence is 91.
- 3. Next number in the number sequence is 22, 11, 33, 16.5, 49.5, ?
Options- A. 24.75
- B. 41
- C. 33.5
- D. 26.75 Also asked in: AIEEE, Bank Exams, CAT, Analyst, Bank Clerk, Bank PO
Correct Answer: 24.75
Explanation:
The given number series is 22, 11, 33, 16.5, 49.5, ?
22
22 / 2 = 11
11 x 3 = 33
33 / 2 = 16.5
16.5 x 3 = 49.5
49.5 / 2 = 24.75
Hence, the next number series is 24.75.
- 4. Complete the number series? 11, 12.2, 14.6, 18.2, ?
Options- A. 21.8
- B. 23
- C. 24.6
- D. 25 Also asked in: AIEEE, Bank Exams, CAT, GATE, Analyst, Bank Clerk, Bank PO
Correct Answer: 23
Explanation:
The given number series 11, 12.2, 14.6, 18.2, ?
11
11 + 1.2 = 12.2
12.2 + 2.4 = 14.6
14.6 + 3.6 = 18.2
18.2 + 4.8 = 23
Hence, the next number in the given number series is 23.
- 5. Find the next number in the given number series? 10, 6, 8, 15, ?
Options- A. 34
- B. 24
- C. 28
- D. 30 Also asked in: AIEEE, Bank Exams, CAT, GATE, Analyst, Bank Clerk, Bank PO
Correct Answer: 34
Explanation:
The given number series is 10, 6, 8, 15, ?
10
10 x 0.5 + 1 = 6
6 x 1 + 2 = 8
8 x 1.5 + 3 = 15
15 x 2 + 4 = 34
Hence, the next number in the given series is 34.
- 6. Find out the wrong term in the series 83,92,85,90,85,88
Options- A. 85
- B. 88
- C. 90
- D. 92 Discuss
Correct Answer: 85
Explanation:
The correct pattern is +9,-7,+5,-3,+1
So,85 is wrong term and must be replaced by 90-3=87
- 7. In the following question, various terms of an alphabet series are given with one or more terms missing as shown by (?). Choose the missing terms out of the given alternatives. Y, B, T, G, O, ?
Options- A. L
- B. N
- C. M
- D. K Discuss
Correct Answer: L
Explanation:
The sequence consists of two series (Y, T, O) and (B, G, ?). The first series consists of 2nd, 7th and 12th letters from the end of English alphabet. The second series consists of 2nd, 7th and 12th letters from the beginning of English alphabet.
- 8. In each of the following questions a letter-series is given, in which some letters are missing. The missing letters are given in the proper sequence as one of the alternatives. Choose the correct alternatives. _ op _ mo _ n _ _ pnmop _
Options- A. mnpmon
- B. mpnmop
- C. mnompn
- D. mnomon Discuss
Correct Answer: mnpmon
Explanation:
The pattern 'mopn' is repeated.
- 9. In the following question a letter-series is given, in which some letters are missing. The missing letters are given in the proper sequence as one of the alternatives. Choose the correct alternatives. ab __ d __ aaba __ na _ badna _ b
Options- A. andaa
- B. babda
- C. dbanb
- D. badna Discuss
Correct Answer: andaa
Explanation:
The series is abadna/abadna/abadna/ab.
The pattern 'abadna' is repeated
- 10. In the following questions a letter-series is given, in which some letters are missing. The missing letters are given in the proper sequence as one of the alternatives. Choose the correct alternatives. _ nmmn _ mmnn _ mnnm _
Options- A. mnnm
- B. nmmn
- C. nmnm
- D. nnmm Discuss
Correct Answer: nnmm
Explanation:
The series is nnmm/nnmn/nnmm/nnmm.
The pattern 'nnmm' is repeated.
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