Category: Fluid Reasoning
Difficulty: Medium
Result: Wrong
6. Which one of the numbers does not belong in the following series?
2 - 3 - 6 - 7 - 8 - 14 - 15 - 30
- THREE
- SEVEN
- EIGHT◀ Correct Answer
- FIFTEEN
- THIRTY
Your Answer: No Answer Given
This question tests your fluid reasoning ability by requiring you to identify the pattern governing a numerical series and to recognize anomalies within it. The series is as follows: 2, 3, 6, 7, 8, 14, 15, 30. Observing the sequence, we can detect a pattern where the operations alternate between addition and multiplication. Starting with 2:
- 2 plus 1 equals 3 (2 + 1 = 3).
- 3 multiplied by 2 equals 6 (3 * 2 = 6).
- 6 plus 1 equals 7 (6 + 1 = 7).
- 7 multiplied by 2 equals 14 (7 * 2 = 14).
- 14 plus 1 equals 15 (14 + 1 = 15).
- 15 multiplied by 2 equals 30 (15 * 2 = 30).
According to this pattern, after 6 + 1 = 7, the next operation should be multiplication by 2, resulting in 7 * 2 = 14. However, the number 8 appears in the series instead of 14, disrupting the established pattern. Therefore, the number that does not belong in the series is 8.