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17 May 2007, 18:07
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How would you solve?
If x is a prime number, what is the value of x?
(1) 2x + 2 is the cube of a positive integer.
(2) The average of any x consecutive integers is an integer.
If x is a prime number, what is the value of x?
(1) 2x + 2 is the cube of a positive integer.
(2) The average of any x consecutive integers is an integer.
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17 May 2007, 19:04
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Stat 1:
x can be 2,3,5,7....
2x+2 ->even
-that implies x =2
A is sufficient
Stat 2:
x is a odd number
eg : avg of 3 integers is an integer.
avg of 5 integers is an integer.
B is suff
Ans :C
