if M and N are positive integers and mn=k is M+N=K+1
1. m=1
2. k= is a prime number
the answer is D
I want to know how I should evaluate this q.
I dont know how it can be D
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jayhawk2001
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1 - sufficient. mn = k. So, if m = 1, n = k. So m+n = 1+kyvonne12 wrote:if M and N are positive integers and mn=k is M+N=K+1
1. m=1
2. k= is a prime number
the answer is D
I want to know how I should evaluate this q.
I dont know how it can be D
2 - sufficient. If k is prime, the only 2 factors are k and 1. So only 2
values are possible. {m=k, n=1} or {m=1, n=k}. Both yield k+1 as sum
Hence D.
