What will come in place of the question mark (?) in the following number series? 4, 12, 36, 108, ? MCQ with Answer and Explanation

What will come in place of the question mark (?) in the following number series? 4, 12, 36, 108, ?
A. 216
B. 432
C. 324
D. 540
Answer: Option C
Solution (By JKSSB Mock Tests)
Each term is multiplied by 3. Therefore, 108×3=324.

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Practice More Number Series Questions

Question #1
What will come in place of the question mark (?) in the following number series? 8, 24, 48, 80, ?
A. 120
B. 128
C. 112
D. 100

Correct Answer: Option A


Explanation:
The differences are: 16, 24, 32. These are increasing by 8. The next difference is 40. Therefore, 80+40=120.

This question belongs to: Reasoning Number Series
Question #2
What will come in place of the question mark (?) in the following number series? 4, 8, 12, 20, ?
A. 28
B. 32
C. 36
D. 24

Correct Answer: Option B


Explanation:
The pattern alternates: +4, ×2? No, 4+4=8, 8+4=12, 12+8=20. Actually, it's adding consecutive even numbers: +4, +4, +8. But more precisely: 4+4=8, 8+4=12, 12+8=20, 20+12=32? Let's re-evaluate: The differences are 4, 4, 8, 12. Not a clear pattern. A better pattern: each term is the sum of the previous two terms? 4+8=12, 8+12=20, 12+20=32. Yes, this is a Fibonacci-like series. The next term is 12+20=32.

This question belongs to: Reasoning Number Series
Question #3
What will come in place of the question mark (?) in the following number series? 5, 13, 25, 41, 61, ?
A. 81
B. 83
C. 87
D. 85

Correct Answer: Option D


Explanation:
The differences are: 8, 12, 16, 20. These are increasing by 4. The next difference is 24. Therefore, 61+24=85.

This question belongs to: Reasoning Number Series