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RRB Junior Engineer / DMS / CMA 2015 · Question 1 of 480

The HCF of two numbers is 15 and their LCM is 270. If one number is 45, the other number is

Mathematics - LCM and HCF

  1. Aa. 18
  2. Bb. 90Correct
  3. Cc. 81
  4. Dd. 675

Answer: B. b. 90

Explanation

Here, HCF = 15, LCM = 270 and one number = 45 .-. Second number HCF x LCM 15x270 45 = 90 One number

Source: Arihant RRB JE Solved Paper 26-Aug-2015 (3rd Shift), Q91–150 — published solved-paper compilation (Q1–90 technical not included in this source) · memory-based

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