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Data Sufficiency (DS) | Re: If positive integer x is a multiple of 6 and positive

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rahulraao wrote:

If positive integer x is a multiple of 6 and positive integer y is a multiple of 14, is xy a multiple of 105?

(1) x is a multiple of 9.
(2) y is a multiple of 25.


X = 3 x 2 x some integer K
Y= 7 x 2 x some integer K

XY= 7 x 5 x 3 x some integer K ? - let's see

St 1

X = 3 x 3 x some integer k
X =3 x 2 x some integer K
LCM(9,6) = 3 x 3 x 3= 18

Insuff n

St 2

Y = 5 x 5 x some integer K
Y = 7 x 2 x some integer K
LCM (7,5) = 7 x 5 x 5 x 2

(3 x 2 x some integer K)(7 x 5 x 5 x 2)/ (7 x 5 x
...

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