Correct Answer:
B. 120
Number series questions test pattern recognition and logical reasoning. To solve them, one must identify the mathematical relationship between consecutive terms.
- The given series is 1, 1, 2, 6, 24, ?. The pattern involves multiplying the previous term by an increasing integer:
- 1st term: 1
- 2nd term: 1 × 1 = 1
- 3rd term: 1 × 2 = 2
- 4th term: 2 × 3 = 6
- 5th term: 6 × 4 = 24
- Following this pattern, the next term (6th) will be 24 × 5 = 120.
- The other options (60, 100, 144) do not follow this established multiplication pattern, making them incorrect.