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02 Mar 2007, 18:07
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If Z is an integer, is 22 a factor of Z?
(1) 22 is a factor of 15Z.
(2) 22 is a factor of 16Z.
(1) 22 is a factor of 15Z.
(2) 22 is a factor of 16Z.
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02 Mar 2007, 18:29
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auniyal
A is my answer
1). 22 has no prime factors of 15
Sufficient
2) 2, which is a factor of 16, is also a factor of 22
Not Sufficient
02 Mar 2007, 22:25
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(D)
Either statement itself is sufficient.
If Z is an integer, is 22 a factor of Z?
(1) 22 is a factor of 15Z.
(2) 22 is a factor of 16Z.
1) if 22 is a factor of 15Z, Z must be 22 or 44 or 66 or multiplication of 22...so, 22 is a factor of 15Z
2) if 22 is a factor of 16Z, Z must be 11 or multiplication of 11. As 2 is a factor of 16, therfore 22 is also a factor of 16Z
Either statement itself is sufficient.
If Z is an integer, is 22 a factor of Z?
(1) 22 is a factor of 15Z.
(2) 22 is a factor of 16Z.
1) if 22 is a factor of 15Z, Z must be 22 or 44 or 66 or multiplication of 22...so, 22 is a factor of 15Z
2) if 22 is a factor of 16Z, Z must be 11 or multiplication of 11. As 2 is a factor of 16, therfore 22 is also a factor of 16Z
