Reasoning section is all about testing one’s ability of questioning and thinking logically. Coding-Decoding is a topic that falls under the reasoning ability section.

The Reasoning section plays a vital role in the CGL selection process. It appears in both Tier 1 and Tier 2 of the CGL exam.

In the same way, Questions hailed from reasoning are a mixture of such ones ranging from easier to the tougher ones. Coding-Decoding is a part of reasoning ability section.