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Question

If z is the H.C.F. of x and y.What is the H.C.F. of xz and yz?

A
z
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B
x
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C
y
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D
1
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Solution

The correct option is D 1
H.C.Fof(xz,yz)
= HCFof(x,y)LCMof(z,z)=zz=1

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