To determine the next number in the series 3, 12, 27, 48, 75, 108, we look for a pattern based on the given numbers.
The pattern appears to be a sequence of cubes with a linear adjustment. Let's break it down step by step:
- Calculate the difference between consecutive terms to detect any pattern.
| Term Position | Value | Difference |
|---|
| 1 | 3 | - |
| 2 | 12 | 12 - 3 = 9 |
| 3 | 27 | 27 - 12 = 15 |
| 4 | 48 | 48 - 27 = 21 |
| 5 | 75 | 75 - 48 = 27 |
| 6 | 108 | 108 - 75 = 33 |
- Notice the differences: 9, 15, 21, 27, 33.
- The difference between consecutive differences is constant:
- 15 - 9 = 6
- 21 - 15 = 6
- 27 - 21 = 6
- 33 - 27 = 6
- This indicates the differences are an arithmetic sequence with a common difference of 6.
- Predict the next difference:
- The next difference should be 33 + 6 = 39.
- Calculate the next term in the original sequence:
- The next term after 108 should be 108 + 39 = 147.
Thus, the next number in the series is 147.
This logic confirms that the correct option is 147.