Number Series problems
- 1. Find the wrong number from the following series ? 7 18 40 106 183 282 403
Options- A. 18
- B. 183
- C. 40
- D. 106 Also asked in: AIEEE, Bank Exams, CAT, GATE, GRE, Bank Clerk, Bank PO
Correct Answer: 40
Explanation:
The given series follows the rule,
+(11x1), +(11x3), +(11x5), +(11x7), +(11x9),....
So starting from 7, 7 + 11 = 18, 18 + 33 = 51, 51 + 55 = 106, ...
So wrong number is 40 which is to be 51.
- 2. Choose the correct alternative that will continue the same pattern and replace the 'x' in the series 6,12,21,x,48
Options- A. 42
- B. 30
- C. 33
- D. 45 Discuss
Correct Answer: 33
Explanation:
the pattern is +6,+9,+12,+15
the missing term is 21+12=33
- 3. In the following question, various terms of an alphanumerical series are given with one or more terms missing as shown by (?). Choose the missing terms out of the given alternatives. P3C, R5F, T8I, V12L, ?
Options- A. X17M
- B. X16O
- C. X17O
- D. Y17O Discuss
Correct Answer: X17O
Explanation:
The first letters of the terms are alternate.
The sequence followed by the numbers is +2, +3, +4,....
The last letter of is three steps ahead of the last letter of the preceding term.
- 4. H T 6 # E 7 $ K I L % 3 P @ 2 A J R U 4 * V D What will come in place of the question mark(?) in the following series based on the above arrangement ? T#6 7K$ L3% ?
Options- A. @2A
- B. A@2
- C. 2A@
- D. None of these Also asked in: Bank Exams, Bank PO
Correct Answer: None of these
- 5. Find the next number in the given series? 118, 166, 190, 202, 208, ?
Options- A. 211
- B. 222
- C. 233
- D. 244 Also asked in: AIEEE, Bank Exams, CAT, GATE, Analyst, Bank Clerk, Bank PO
Correct Answer: 211
Explanation:
The given series is 118, 166, 190, 202, 208, ?
118
118 + 48 = 166
166 + 24 = 190
190 + 12 = 202
202 + 6 = 208
208 + 3 = 211
- 6. 11M13, 13Q17, ? , 17V22 , 19W23
Options- A. 15U21
- B. 15R18
- C. 15S19
- D. 15T20 Discuss
Correct Answer: 15T20
Explanation:
In the given series
1st term has odd number starting from 11, So the Series is 11, 13, 15, 17, 19
2nd term has an alphabet follwed by its alpha numeric number in the order +4, +3, +2, +1. So the Series is M13, Q17, T20, V22, W23
Therefore, 15T20 is the answer.
- 7. In the following sum, ??? stands for which digit ? 8 + ?8 + 28 + 83 + 8? = 2?8
Options- A. 4
- B. 3
- C. 2
- D. 1 Also asked in: Bank Exams, CAT, Bank Clerk
Correct Answer: 1
Explanation:
By trial and error method from the given options,
'1' satisfies the above given equation.
- 8. Find the next number in the given number series? 6, 6, 12, 36, 144, 720, ?
Options- A. 4320
- B. 3547
- C. 2154
- D. 1765 Also asked in: AIEEE, Bank Exams, CAT, GATE, Analyst, Bank Clerk, Bank PO
Correct Answer: 4320
Explanation:
The given series is 6, 6, 12, 36, 144, 720, ?
6
6 x 1 = 6
6 x 2 = 12
12 x 3 = 36
36 x 4 = 144
144 x 5 = 720
720 x 6 = 4320
Hence, the next number in the given number series is 4320.
- 9. Find the next number in the given number series? 8, 11, 19, 23, 32, ?
Options- A. 37
- B. 39
- C. 47
- D. 49 Also asked in: AIEEE, Bank Exams, CAT, GATE, Analyst, Bank Clerk, Bank PO
Correct Answer: 37
Explanation:
The given number series is 8, 11, 19, 23, 32, ?
It follows a pattern that
8 + 11 = 19
11 + 12 = 23
19 + 13 = 32
23 + 14 = 37
32 + 15 = 47
....
Hence, the next number in the given series = 37.
- 10. Choose the correct alternative that will continue the same pattern and replace 'x' in the series 6834,6151,5536,4983,x
Options- A. 4467
- B. 4538
- C. 4184
- D. 4485 Discuss
Correct Answer: 4485
Explanation:
Each term in the series is obtained by subtracting from the preceding term the number formed by the first three digits of preceding term
So,missing term is 4983-498=4485
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