# Placement Questions & Answers :: IBM

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**IBM Practice Q&A**

11. Find the next term of the following series.

3, 1, 13, 11, 31, 29, ?

**Answer:**** Option B **

**Explanation:**

1^2+2=3, 2^2-3=1, 3^2+4=13, 4^2-5=11, 5^2+6=31, 6^2-7=29, 7^2+8=57.

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12. Find the next term of the following series.

6,120, 504, 1320, ?

**Answer:**** Option B **

**Explanation:**

2^3-2-=6, 5^3-5=120, 8^3-8=504, 11^3=1320, 14^3=2730.

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13. Find the next term of the following series.

2, 7, 36, 4, 14, 225, 6, 21, ?

**Answer:**** Option B **

**Explanation:**

2, 7, 36, 4, 14, 225, 6, 21, ?

Break the above series as below

2, 4, 6 -------- (1)

7,14,21 -------- (2)

6^2, 15^2 ------- (3)

from (3) 6,15, diff is (+9) so it will 15+9 = 24

24^2 = 576

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14. Find the next term of the following series.

23,8,34,81,33,?

**Answer:**** Option C **

**Explanation:**

23 => 2^3=8

34 => 3^4=81

33 => 3^3=27.

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15. Find the next term of the following series.

20,21,23,24,27,28,32,33,?

**Answer:**** Option A **

**Explanation:**

20,21 / 23,24 / 27,28 / 32,33 / 37

+1 , +2, +3, +4

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16.

Find the next term of the following series.

16,19,23,26,30,?

17. Find the next term of the following series.

21,24,22,25,23,26,24,?

**Answer:**** Option B **

**Explanation:**

Break the series as below

21 __, 22,__,23,__24,

__,24,__,25,__,26,__,27

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18. Find the next term of the following series.

1/4,1/4,1/2,3/2,6,?

**Answer:**** Option B **

**Explanation:**

1/4 * 1 = 1/4, 1/4 * 2 = 1/2

1/2*3 = 3/2, 3/2 * 4 = 6, 6 * 5 = 30.

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19. Find the next term of the following series.

-16, -8, -4, -24, -12, -6, -40,?

**Answer:**** Option A **

**Explanation:**

-16, -8, 4 / 24, 12, -6 / -40, -20,

divide by 2 to get element.

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20. Find the next term of the following series.

42,44,28,29,30,42,43,27,28,?

**Answer:**** Option A **

**Explanation:**

"42,44 / 28,29,30 / 42,43 / 27,28,29

+1 in second sub-series."

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Here is the list of questions asked in IBM Aptitude Test Question with Answers IBM Mock Test page 2. Practice IBM Written Test Papers with Solutions and take Q4Interview IBM Online Test Questions to crack IBM written round test. Overall the level of the IBM Online Assessment Test is moderate. Only those candidates who clear the written exam will qualify for the next round, so practic all the questions here and take all the free tests before going for final selection process of IBM