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Is abc equal to 1?
(1) a, b, and c are all positive.
(2) a + b + c = 3
(1) a, b, and c are all positive.
(2) a + b + c = 3
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29 Oct 2006, 13:27
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(E) for me 
Stat 1 a, b and c > 0
o if a=b=c=1, a*b*c = 1
o if a=b=c=2, a*b*c = 8
INSUFF
Stat 2 a + b + c = 3
o if a=b=c=1, a*b*c = 1
o if a=3 and b=c=0, a*b*c = 0
INSUFF
Both (1) and (2)
o if a=b=c=1, a + b + c = 3 and a*b*c = 1
o if a=1/2, b=3/2 and c=1, a + b + c = 3 and a*b*c = 3/4
INSUFF
Stat 1 a, b and c > 0
o if a=b=c=1, a*b*c = 1
o if a=b=c=2, a*b*c = 8
INSUFF
Stat 2 a + b + c = 3
o if a=b=c=1, a*b*c = 1
o if a=3 and b=c=0, a*b*c = 0
INSUFF
Both (1) and (2)
o if a=b=c=1, a + b + c = 3 and a*b*c = 1
o if a=1/2, b=3/2 and c=1, a + b + c = 3 and a*b*c = 3/4
INSUFF
