Number series questions for fresher jobs are quite popular in the campus or walk-in interviews. They are a staple feature in various bank PO and accounting jobs in India and in fact there are many coaching classes charging big money to teach these “math tricks”. These coaching may help you if you are short in time for preparation but are a disaster when it comes to developing your own methods and approaches to solving problems. Indian competitive exams are renowned worldwide for their rigor and preparedness but this education system pretty much destroys the individualistic learning style and create a herd of professionals unable to solve the real world problems.

This is one such set of number series questions for fresher jobs. Take your time, develop your approach and don’t be critical of yourself if you fail to solve most of them. These number series questions can be solved with mental calculation but obviously you can use any accessory like calculator or pencil-paper to solve them. These series questions have been selected from various Indian bank PO exams so this attempt can give you a fair idea of your preparedness for them.

6, 12, 33, 66, 132, 363, .....?

Next Number = Previous Number + Reverse of Previous Number 6 + 6 = 12 ; 12 + 21 = 33 ; 33 + 33 = 66 ; 66 + 66 = 132 ; 132 + 231 = 363 ; 363 + 363 = 726

45, 90, 100, 200, 210, 420, ....?

(45, 90), (100,200), (210,420) First number of the next pair is obtained by adding 10. So, the next pair will be (430, 860)

C, Y, F, V, I, ...?

A=1, B=2, ..., Z=26; The sequence is 3, 25, 6, 22, 9, .... ; (3, 6, 9) ; (25, 22, 19) ; 19 = S

2, 4, 10, 28, 82, 244, ....?

Series of the differences: 2, 6, 18, 54, 162. Next term is multiplied by 3. Next Difference = 162 X 3 = 486 ; Next term = 486 + 244 = 730

4, 6, 10, 14, 22, 26, 34, ....?

The series by dividing this series by 2; 2, 3, 5, 7, 11, 13, 17, .....; This is prime number series. Next term = 2 X 19 = 38

2, 5, 11, 17, 23, ....?

The prime series = 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31. This is a series of alternate prime numbers.

A, B, D, H, ....?

Converting to number series: 1, 2, 4, 8, ....; This is a geometric series with first term as 1 and the common ration as 2. So the 16th alphabet is P.

5, 6, 10, 12, 20, 24, 40, ....?

Group of Series are (5, 10, 20, 40) and (6, 12, 24, ....); The next term in this series will be 48

A, D, I, P, ....?

Converting to the number series: 1, 4, 9, 16, ...... The next perfect square is 25. 25 corresponds to Y.

2, 2, 12, 12, 30, 30, ....?

1 X 2 = 2; 2 X 1 = 2; 3 X 4 = 12, 4 X 3 = 12; 5 X 6 = 30, 6 X 5 = 30; 7 X 8 = 56, 8 X 7 = 56;

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