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07 Sep 2019, 20:24
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Is x*y*z a multiple of 3?
(I) x is a multiple of 9.
(II) y and z are prime numbers greater than 3.
(I) x is a multiple of 9.
(II) y and z are prime numbers greater than 3.
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07 Sep 2019, 20:42
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Ok
My take.
A. We know x = 9k but we do not know anything abt y and z..may be they are non integers or decimals.
Not sufficient
B. Nothing known abt x Not sufficient
By combining we know that each is an integer and x is always divided by 3.
Posted from my mobile device
My take.
A. We know x = 9k but we do not know anything abt y and z..may be they are non integers or decimals.
Not sufficient
B. Nothing known abt x Not sufficient
By combining we know that each is an integer and x is always divided by 3.
Posted from my mobile device
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