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Answer Should be B,crackthegmat2011 wrote:If x and y are integers such that y>x>0 and x raise to power m = y raise to power n, then what is value of m + n ?
1. x is prime number
2. y is not multiple of x.
is " y is not multiple of x. It means x and y must be Coprime to each other.goyalsau wrote:Answer Should be B,crackthegmat2011 wrote:If x and y are integers such that y>x>0 and x raise to power m = y raise to power n, then what is value of m + n ?
1. x is prime number
2. y is not multiple of x.
what is the value of M + N , Given x^m = y^n ( x and y are integers )
1. x is a prime number,, We can Have many value for x and y
LIKE x = 2 and y = 8
2 ^ 6 = 8 ^ 2 M+N = 8
3 ^ 10 = 9 ^ 5 M + N = 15
So insufficient.
2. y is not multiple of x. It means x and y must be Coprime to each other.
and co prime value are equal only for the power of 0
So M + N = 0
So sufficient
Answer B.
If y is not a multiple of x, it does not mean that x and y are coprime.is " y is not multiple of x. It means x and y must be Coprime to each other.
and co prime value are equal only for the power of 0" a rule?
can you please explain more details?
Thanks Rahul,Rahul@gurome wrote:If y is not a multiple of x, it does not mean that x and y are coprime.is " y is not multiple of x. It means x and y must be Coprime to each other.
and co prime value are equal only for the power of 0" a rule?
can you please explain more details?
Two integers are said to be coprime if they do not have any common factor apart from 1.
For example take x=18 and y=24. 24 is not a multiple of 18 but they are not coprime because they have a common factor 6 apart from 1.
Similarly take 9 and 20. They are coprime because the only common factor for them is 1.
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