Odd Man Out And Series(Quantitative Aptitude ) Questions and Answers

Question 1. 3, 5, 11, 14, 17, 21
  1.    21
  2.    17
  3.    14
  4.    3
Explanation:-
Answer: Option C. -> 14
Each of the numbers except 14 is an odd number.
The number '14' is the only EVEN number.
Question 2. 8, 27, 64, 100, 125, 216, 343
  1.    27
  2.    100
  3.    125
  4.    343
Explanation:-
Answer: Option B. -> 100
The pattern is 23, 33, 43, 53, 63, 73. But, 100 is not a perfect cube.
Question 3. 10, 25, 45, 54, 60, 75, 80
  1.    10
  2.    45
  3.    54
  4.    75
Explanation:-
Answer: Option C. -> 54
Each of the numbers except 54 is multiple of 5.
Question 4. 6, 9, 15, 21, 24, 28, 30
  1.    28
  2.    21
  3.    24
  4.    30
Explanation:-
Answer: Option A. -> 28
Each of the numbers except 28, is a multiple of 3.
Question 5. 396, 462, 572, 427, 671, 264
  1.    396
  2.    427
  3.    671
  4.    264
Explanation:-
Answer: Option B. -> 427
In each number except 427, the middle digit is the sum of other two.
Question 6. 835, 734, 642, 751, 853, 981, 532
  1.    751
  2.    853
  3.    981
  4.    532
Explanation:-
Answer: Option A. -> 751
In each number except 751, the difference of third and first digit is the middle one.
Question 7. 331, 482, 551, 263, 383, 362, 284
  1.    263
  2.    383
  3.    331
  4.    551
Explanation:-
Answer: Option B. -> 383
In each number except 383, the product of first and third digits is the middle one.
Question 8. 41, 43, 47, 53, 61, 71, 73, 81
  1.    61
  2.    71
  3.    73
  4.    81
Explanation:-
Answer: Option D. -> 81
Each of the numbers except 81 is a prime number.
Question 9. 3, 5, 7, 12, 17, 19
  1.    19
  2.    17
  3.    5
  4.    12
Explanation:-
Answer: Option D. -> 12
Each of the numbers is a prime number except 12.
Question 10. 1, 4, 9, 16, 23, 25, 36
  1.    9
  2.    23
  3.    25
  4.    36
Explanation:-
Answer: Option B. -> 23
Each of the numbers except 23, is perfect square.
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