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03 Jun 2013, 10:34
Kudos
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hi every one ... i have this Q ... i already have the answer of this question but the problem is that i can not understand the question " it does not make any sense to me :Can the
positive integer n be written as the sum of two different positive prime numbers?
(1) n is greater than 3.
(2) n is odd.
my analysis was like this :
can n be the sum of 2 prime numbers ? yes
(1) n is greater than 3 .....> n = 2+3 = 5 ,,, sufficient
(2) n is odd .....> n = 2+3=5 ... or n=3+5=8 ... not sufficient
then the answer is A
but the real answer was E
i think there is something wrong in the way they put the Q.
positive integer n be written as the sum of two different positive prime numbers?
(1) n is greater than 3.
(2) n is odd.
my analysis was like this :
can n be the sum of 2 prime numbers ? yes
(1) n is greater than 3 .....> n = 2+3 = 5 ,,, sufficient
(2) n is odd .....> n = 2+3=5 ... or n=3+5=8 ... not sufficient
then the answer is A
but the real answer was E
i think there is something wrong in the way they put the Q.
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