Question: What number will come at the place of the question mark (?) in the series 6, 24, 60, 120 ?
Series: 6, 24, 60, 120, ?
Options:
- 150
- 180
- 210
- 135
Solution:
This is a number series where a specific pattern exists between the numbers. To solve this, we need to figure out how each number is generated.
The first four numbers in the series are:
- 6, 24, 60, 120
Now, let’s analyze the pattern by expressing these numbers in a particular mathematical form:
- 6 can be written as (1 \times 2 \times 3)
- 24 can be written as (2 \times 3 \times 4)
- 60 can be written as (3 \times 4 \times 5)
- 120 can be written as (4 \times 5 \times 6)
Now, we can see that each number follows the form (n(n+1)(n+2)), where (n) starts at 1 and increases by 1 in each step.
For the next number, (n = 5), so:
- (5 \times 6 \times 7 = 210)
Thus, the next number in the series is 210.
Answer:
The correct answer is: 3. 210