Question:The L.C.M. and H.C.F. of two numbers `x` and `y` are `l` and `h` repectively. Then, 

A `l : h = x : y` 
B `x : h = l : y` 
C `x : l = y : h` 
D `x : h = y : l` 

+ Answer
B 

+ Explanation
Product of numbers = Product of their H.C.F. & L.C.M.

`:. xy = lh`

`iff x/h = l/y`

`iff x : h = l : y`.

+ Report

Md. Habib Ullah

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