What will come in place of the question mark (?) in the following number series? 2, 4, 12, 48, 240, ? MCQ with Answer and Explanation

What will come in place of the question mark (?) in the following number series? 2, 4, 12, 48, 240, ?
A. 1200
B. 1440
C. 960
D. 1080
Answer: Option B
Solution (By JKSSB Mock Tests)
The pattern is: 2×2=4, 4×3=12, 12×4=48, 48×5=240. The multipliers are increasing by 1. The next multiplier is 6. Therefore, 240×6=1440.

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Number Series Questions

Question #1
What will come in place of the question mark (?) in the following number series? 4, 8, 12, 20, ?
A. 28
B. 32
C. 24
D. 36

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 #2
What will come in place of the question mark (?) in the following number series? 1, 5, 14, 30, 55, ?
A. 90
B. 80
C. 91
D. 85

Correct Answer: Option C


Explanation:
The differences are: 4, 9, 16, 25. These are squares of consecutive integers: 2², 3², 4², 5². The next difference is 6²=36. Therefore, 55+36=91.

This question belongs to: Reasoning Number Series
Question #3
What will come in place of the question mark (?) in the following number series? 2, 5, 9, 14, 20, ?
A. 28
B. 25
C. 26
D. 27

Correct Answer: Option D


Explanation:
The differences are: 3, 4, 5, 6. The next difference is 7. Therefore, 20+7=27.

This question belongs to: Reasoning Number Series