CSATNumber System & SeriesSequence Pattern Reasoning2022

What is the value of X in the sequence 20, 10, 10, 15, 30, 75, X?

A

105

B

120

C

150

D

225

Correct Answer: Option D

Explanation

To solve this, we look at how one number transforms into the next. 1. **Analyze the first step:** The series goes from 20 to 1

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