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If x: y be the ratio of two whole numbers and z be their HCF, then the LCM of those two numbers is:

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(1) yz (2) xz/y (3) xy/z (4) xyz

Solution:

Product of two numbers
= HCF * LCM
⇒ Number = zx and zy
:. zx*zy = z*LCM
⇒ LCM =xyz

Then the option is (4) xyz

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