LCM and HCF — RRB NTPC Topic Guide

Topic Overview

The topic LCM and HCF is an essential component of the Number System chapter in RRB NTPC Mathematics. Candidates must master the theoretical foundations, solve sample problems, and identify shortcuts to answer questions on this topic quickly under exam conditions.

Suggested Study Strategy

• Review standard formulas and theorems associated with LCM and HCF.
• Solve at least 15-20 practice questions of varying difficulty levels (easy, moderate, hard).
• Go through previous years' solved papers to examine how LCM and HCF questions were framed.
• Take short timed quizzes to evaluate your accuracy and problem-solving speed.