Re: Is xy a multiple of 48? (1) x is a multiple of 4 (2) y is a multiple
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15 Apr 2021, 10:36
st1 > x is multiple of 4, so that would be: 4,8,12, 16, 20. we don't know anything about y. Not suff.
St2> y is multiple of 6, so that would be: 6,12,18,24. we don't know anything about x. Not suff.
1 + 2:
if x=4 and y= 12 (it's just one example you can pick any combo) then yes, xy = 48, multiple of 48. BUT x & y can be any multiple of 4 and 6 respectively.
what if x= 4 and y=6, then xy=24 << this is not a multiple of 48. hence, Not suff.
E.