DH99 wrote:

If M and N are integers, what is the value of M + N?

(1) MN = 10

(2) \(M^2+N^2=29\)

(1)

If M=5 and N=2 ,then MN=10 and M+N=7

if M=10 and N-=1,then MN=10 ,but M+N=11.. Not Sufficient

(2)

If M=5 and N=2 ,then \(M^2+N^2=29\) and M+N=7

if M=-5 and N=-2 then \(M^2+N^2=29\) ,but M+N=-7..Not Sufficient

Together,

If M=5 and N=2,then MN=10 and \(M^2+N^2=29\).Hence ,M+N=7

If M=-5 and N=-2,then MN=10 and \(M^2+N^2=29\).But M+N=-7...Not Sufficient

Therefore the Correct Answer is E
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Md. Abdur Rakib

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