Find the missing number in the series:15, 45, ?, 405.
- 405 90
- 75
- 135
- None of these
Explanation
Given series: 15, 45, ?, 405Let's find the pattern:
15 × 3 = 45
45 × 3 = 135
135 × 3 = 405
The pattern is obtained by multiplying the previous term by 3.
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