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19 Mar 2004, 13:36
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Is a/b an ineger?
(1) 4a/b is an ineger
(2) 4b/a is an integer
(1) 4a/b is an ineger
(2) 4b/a is an integer
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19 Mar 2004, 14:00
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E is answer
from 1) take a=1 and b=2
4*1 / 2 = 2 --> ok
but a/b = 1/2 --> so answer is no
take a=2 and b=1
4*2 / 1 = 8 --> ok
and a/b = 2/1 --> so answer is yes
Statement 1 is inconclusive
from 2) take a=1 and b=2
4*2 / 1 = 8 --> ok
but a/b = 1/2 --> so answer is no
take a=2 and b=1
4*1 / 2 = 2 --> ok
and a/b = 2/1 --> so answer is yes
Statement 2 alone is inconclusive
Both statements together
take a=1 and b=2
4*2 / 1 = 8 --> ok
4*1 / 2 = 2 --> ok
but a/b = 1/2 --> not ok
take a=4 and b=2
4*4 / 2 = 8 --> ok
4*2 / 4 = 2 --> ok
and a/b = 4/2 --> ok
So both statements together is inconclusive
from 1) take a=1 and b=2
4*1 / 2 = 2 --> ok
but a/b = 1/2 --> so answer is no
take a=2 and b=1
4*2 / 1 = 8 --> ok
and a/b = 2/1 --> so answer is yes
Statement 1 is inconclusive
from 2) take a=1 and b=2
4*2 / 1 = 8 --> ok
but a/b = 1/2 --> so answer is no
take a=2 and b=1
4*1 / 2 = 2 --> ok
and a/b = 2/1 --> so answer is yes
Statement 2 alone is inconclusive
Both statements together
take a=1 and b=2
4*2 / 1 = 8 --> ok
4*1 / 2 = 2 --> ok
but a/b = 1/2 --> not ok
take a=4 and b=2
4*4 / 2 = 8 --> ok
4*2 / 4 = 2 --> ok
and a/b = 4/2 --> ok
So both statements together is inconclusive
