3, 5, 7, 12, 13, 17, 19? 19 17 13 12 Each of the number except 12, is a prime nu

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Home ‣ Aptitude ‣ Odd Man Out and Series Comments

Question
3, 5, 7, 12, 13, 17, 19?
Options
A. 19
B. 17
C. 13
D. 12

Correct Answer

12

Explanation

Each of the number except 12, is a prime number

Odd Man Out and Series problems

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1.
10, 14, 16, 18, 21, 24, 26?
Options
A. 26
B. 24
C. 21
D. 18

Discuss

Correct Answer: 21

Explanation:

Each of the number except 21, is an even number .

2.
3, 5, 9, 11, 14, 17, 21?
Options
A. 21
B. 17
C. 14
D. 9

Discuss

Correct Answer: 14

Explanation:

Each of the number except 14, is an odd number .

3.
1, 4, 9, 16, 23, 25, 36?
Options
A. 9
B. 23
C. 25
D. 36

Discuss

Correct Answer: 23

Explanation:

Each of the given number is except 23, is perfect square

4.
6, 9, 15, 21, 24, 28, 30?
Options
A. 25
B. 21
C. 24
D. 30

Discuss

Correct Answer: 25

Explanation:

Each of the number except 28, is a multiple of 3.

5.
16, 25, 36, 72, 144, 196, 225?
Options
A. 36
B. 72
C. 196
D. 225

Discuss

Correct Answer: 72

Explanation:

Each of the number except 72, is a perfect square.

6.
5, 16, 6, 16, 7, 16, 7, 16, 9?
Options
A. 9
B. 7
C. 6
D. None of these

Discuss

Correct Answer: 9

Explanation:

Terms at odd places are 5, 6, 7, 8 etc. and each term at even place is 16. So, 9 is wrong.

7.
582, 605, 588, 611, 634, 617, 600?
Options
A. 634
B. 611
C. 605
D. 600

Discuss

Correct Answer: 634

Explanation:

Alternately 23 is added and 17 is subtracted from the terms. So, 634 is wrong.

8.
22, 33, 66, 99, 121, 279, 594?
Options
A. 33
B. 121
C. 279
D. 594

Discuss

Correct Answer: 279

Explanation:

Each number except 279 is a multiple of 11.

9.
2, 5, 10, 50, 500, 5000?
Options
A. 0
B. 5
C. 10
D. 5000

Discuss

Correct Answer: 5000

Explanation:

Pattern is 1st x 2nd = 3rd; 2nd x 3rd = 4th, 3rd x 4th = 5th. But 4th x 5th = 50 x 500 = 25000 ? 5000 = 6th.

10.
1, 8, 27, 64, 125, 216, (...) :
Options
A. 354
B. 343
C. 392
D. 245

Discuss

Correct Answer: 343

Explanation:

Number are 1³, 2³, 3³, 4³, 5³, 6³.

So, the missing number is 7³ = 343.

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3, 5, 7, 12, 13, 17, 19?

Odd Man Out and Series problems

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