RRB RPF RPSF SI and CONS Model Papers 7 with solutions

Question : 45 of 120

Marks: +1, -0

The product of two numbers is 216. If the HCF is 6, then their LCM is

Solution:

(4) Let the numbers be 6x and 6y where x and y are prime to each other.
∴

6x × 6y = 216

⇒

x y= {216}/{6 × 6}=6

∴ LCM

= 6xy = 6 × 6 = 36

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