Odd Man Out and Series problems
- 1. What should come in place of question mark (?) in the following number series? 38, 195, ?, 4905, 24530, 122655
Options- A. 980
- B. 885
- C. 824
- D. 1021 Also asked in: GATE, CAT, Bank Exams, AIEEE, Bank PO, Bank Clerk
Correct Answer: 980
Explanation:
The given series follows the pattern that,
×5+5, ×5+5, ×5+5, ×5+5, ×5+5
38 x 5 + 5 = 195
195 x 5 + 5 = 980
980 x 5 + 5 = 4905
4905 x 5 + 5 = 24530
24530 x 5 + 5 = 122655
So the missing number is 980 .
- 2. Find the Missing number in the given Series ? 2, 3, 6, 15, ? , 157.5
Options- A. 87
- B. 78.5
- C. 56.5
- D. 45 Also asked in: AIEEE, Bank Exams, CAT, GATE, Bank Clerk, Bank PO
Correct Answer: 45
Explanation:
Here given
2, 3, 6, 15, ? , 157.5
2 x 1.5 = 3
3 x 2 = 6
6 x 2.5 = 15
15 x 3 = 45
45 x 3.5 = 157.5
Therefore, the missing number is 45
- 3. What is the next number in the following number series 3, 5, 8, 15, 28, 51, ?
Options- A. 98
- B. 102
- C. 87
- D. 79 Also asked in: AIEEE, Bank Exams, CAT, GATE, GRE, Analyst, Bank Clerk, Bank PO
Correct Answer: 98
Explanation:
The given number series is
3, 5, 8, 15, 28, 51, ?
Here the pattern it follows is
3
3 + 2 = 5 ( add prime number less than 3 i.e, 2)
5 + 3 = 8 (3 is prime number less than 5)
8 + 7 = 15 (7 is prime number less than 8)
15 + 13 = 28 (13 is prime number less than 15)
28 + 23 = 51 (23 is prime number less than 28)
51 + 47 = 98 (47 is prime number less than 51)
Hence, the next number in the given number series is 98.
- 4. Find the odd man out of the number series? 18, 37, 76, 155, 314, 635
Options- A. 37
- B. 155
- C. 314
- D. 635 Also asked in: GATE, CAT, Bank Exams, AIEEE, Bank PO, Bank Clerk, Analyst
Correct Answer: 635
Explanation:
Given Number series is 18 37 76 155 314 635
follows a pattern that,
18
18 x 2 +1 = 37
37 x 2 +2 = 76
76 x 2 +3 = 155
155 x 2 +4 = 314
314 x 2 +5 = 633 not 635
Hence, the odd man is 635.
- 5. What value will come in place of question mark (?) in following number series? 12, 16, 32, 68, ?
Options- A. 198
- B. 164
- C. 132
- D. 118 Also asked in: GATE, CAT, Bank Exams, AIEEE, Bank PO, Bank Clerk, Analyst
Correct Answer: 132
Explanation:
Given series is
12 16 32 68 ?
Here it follows a pattern that,
12
12 + (2x2) = 16
16 + (4x4) = 32
32 + (6x6) = 68
68 + (8x8) = 132
- 6. Find the missing number in the series 1, 6, ?, 15, 45, 66, 91
Options- A. 24
- B. 28
- C. 32
- D. 26 Also asked in: AIEEE, Bank Exams, CAT, GATE, Analyst, Bank Clerk, Bank PO, IT Trainer
Correct Answer: 28
Explanation:
Here the given series 1, 6, ?, 15, 45, 66, 91 follows a
Pattern in the series is, +5, +9, +13,...,.. +21, +25
So +4 is getting increased at every term addition.
Missing Number in the series will be 15+(9+4) = 15 + 13 = 28.
- 7. The missing number in the Series 114, 131, 165, 216, ?, 369
Options- A. 314
- B. 304
- C. 294
- D. 284 Also asked in: AIEEE, Bank Exams, CAT, GATE, GRE, Analyst, Bank Clerk, Bank PO, Database Administrator, IT Trainer
Correct Answer: 284
Explanation:
114 131 165 216 ? 369
+17 +34 +51 +68 +85
=> The missing number in the given Number series = 216 + 68 = 284.
- 8. Find out the wrong number in the following series ? 2880, 480, 92, 24, 8, 4, 4
Options- A. 480
- B. 92
- C. 24
- D. 4 Also asked in: Bank Exams, CAT, GATE, GRE, Bank Clerk, Bank PO
Correct Answer: 92
Explanation:
The given series of numbers follow the rule that,
2880/6 = 480
480/5 = 96
96/4 = 24
24/3 = 8
8/2 = 4
4/1 = 4
But 92 is not in the rule. It is the wrong number in the given series.
- 9. Find the next number in te given series ? 5, 25, 61, 113, ...
Options- A. 142
- B. 181
- C. 156
- D. 179 Also asked in: CAT, Bank Exams, AIEEE, Bank PO, Bank Clerk
Correct Answer: 181
Explanation:
Here the series follow the rule that
SO NEXT IS,
- 10. Complete the missing number in the given series. 5, 20, 76, (?), 448
Options- A. 185
- B. 225
- C. 415
- D. 232 Also asked in: AIEEE, Bank Exams, CAT, GATE, Bank Clerk, Bank PO
Correct Answer: 225
Explanation:
The series follows the following pattern
5 X 5 ? 5 = 20
20 X 4 ? 4 = 76
76 X 3 ? 3 = 225
225 X 2 ? 2 = 448
Hence, the term 225 denoted by (d) completes the series
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