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Home ‣ Aptitude ‣ Odd Man Out and Series Comments
- Question
What will come in place of the question mark (?) in the following number series ? 12, 24, 26.5, 79.5, ?, 330
Options- A. 211
- B. 101.5
- C. 82.5
- D. 99
- Correct Answer
- 82.5
ExplanationThe given series
12 24 26.5 79.5 ? 330 follows a pattern that,
12 x 2 = 24
24 + 2.5 = 26.5
26.5 x 3 = 79.5
79.5 + 3 = 82.5
82.5 x 4 = 330
Hence, the missing number is 82.5
- 1. 7 9 19 18 31 29 Find the odd number in the given Number Series?
Options- A. 31
- B. 29
- C. 18
- D. 19 Discuss
- 2. Find the missing number? 15, 30, ? , 40, 8, 48
Options- A. 21
- B. 8
- C. 19
- D. 10 Discuss
- 3. What value will come in place of question mark (?) in the number - series given below ? 4, 30, ?, 1440, 7195, 71940
Options- A. 145
- B. 545
- C. 650
- D. 999 Discuss
- 4. Mark the odd man out of the series? 1 6 27 124 650
Options- A. 27
- B. 124
- C. 6
- D. 650 Discuss
- 5. What will come in place of the question mark (?) in the following number series? 5, 7, ?, 25, 45, 75
Options- A. 11
- B. 13
- C. 15
- D. 19 Discuss
- 6. A man saves Rs. 200 in each of the first three months of his service. In each of the subsequent months his saving increases by Rs. 40 more than the saving of immediately previous month. His total saving from the start of service will be Rs. 11040 after ?
Options- A. 19 months
- B. 21 months
- C. 18 months
- D. 20 months Discuss
- 7. Find the odd letter/word from the given alternatives.
Options- A. Horse
- B. Ewe
- C. Hind
- D. Bitch Discuss
- 8. In following number series only one number is wrong. Find out that wrong or odd number in the series? 6, 78, 858, 7722, 54055, 270270
Options- A. 270270
- B. 54055
- C. 7722
- D. 858 Discuss
- 9. 311, 230, 294, ?, 281, 256 What will come in place of the question mark (?) in the above number series?
Options- A. 240
- B. 245
- C. 244
- D. 246 Discuss
- 10. Please enter the Missing number: 4 8 14 22 ?
Options- A. 28
- B. 32
- C. 46
- D. 36 Discuss
Odd Man Out and Series problems
Search Results
Correct Answer: 29
Explanation:
Here the given number series follows a pattern of two alternate series.
1. 7 19 31 ...(Difference of 12)
2. 9 18 27 ...(Difference of 9)
Here the odd number is 29 instead of 27
And the next number is 31 + 12 = 43 & 27 + 9 = 36
Correct Answer: 10
Explanation:
Given nuber series is 15, 30, ? , 40, 8, 48
Here the number series follows a pattern that
15
15 x 2 = 30
30 3 = 10
10 x 4 = 40
40 5 = 8
8 x 6 = 48
Hence, the missing number in the series is 10.
Correct Answer: 145
Explanation:
4 30 ? 1440 7195 71940
Here the given series follows a pattern of
4
4 x 10 - 10 = 30
30 x 5 - 5 = 145
145 x 10 - 10 = 1440
1440 x 5 - 5 = 7195
7195 x 10 - 10 = 71940
Hence, the missing number is 145
Correct Answer: 650
Explanation:
The given series is 1 6 27 124 650
1
1 + 2 x 2 = 6
6 + 3 x 3 = 27
27 + 4 x 4 = 124
124 + 5 x 5 = 645 (NOT 650)
Hence, the odd man in the given number series is 650.
Correct Answer: 13
Explanation:
The series given follow the pattern
+2, +2+4, +2+4+6, +2+4+6+8, +2+4+6+8+10,...
Here ? = 7 + 2 + 4 = 13.
Correct Answer: 21 months
Explanation:
Total savings = 200 + 200 + 200 + 240 + 280 + ... to n months = 11040
= 120 + 80 + 160 + 40 + 200 + 240 + ....n terms
= 40 + 80 + 120 + 160 + 200 + 240 + ...n terms
= n/2[2a + (n-1)d] + 80 + 40 = 11040
= n/2[240 + (n-1)40] = 10920
= n[6+n-1] = 546
= n[n+5] = 546
n = 21
Correct Answer: Horse
Explanation:
Except Horse, remaining all belong to female category.
Hind - Female Deer
Ewe - Female Sheep
Bitch - Female Dog.
Correct Answer: 54055
Explanation:
Here the given series follows a pattern that, multiplying the number with odd numbers in decreasing order starting with 13. That is,
6 × 13 = 78
65 × 11 = 858
858 × 9 = 7722
7722 × 7 = 54054
54054 × 5 = 270270
Hence, the wrong number is 54055
Correct Answer: 245
Explanation:
Given 311 230 294 ? 281 256
311 - (9x9) = 230
230 + (8x8) = 294
294 - (7x7) = 245
245 + (6x6) = 281
281 - (5x5) = 256
Hence, the missing number in the given series is 245.
Correct Answer: 32
Explanation:
Here the given series follows a pattern that,
22 - 0 = 4
32 - 1 = 8
42 - 2 = 14
52 - 3 = 22
62 - 4 = 32
Hence, the missing number is 32
Method 2 ::
The difference between 4 and 8 is 4, the difference between 8 and 14 is 6, the difference between 14 and 22 is 8. So the next difference between 22 and the next number will be 10 since it follows (4,6,8,10 - add +2 each time)
Hence, 22 + 10 = 32 is the missing number.
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