If m+n+k = 15 where m , n , k are positive integers and
m<n<k what is n-m?
a) k is greater than 10
b) k is a prime number
m<n<k what is n-m?
a) k is greater than 10
b) k is a prime number
IMO C
1)K>10
if k =11 n can be 3 and m can be 1 (m<n<k)(n-m=2)
if k =12 n cab be 2 and m =1(n-m=1)
Not Sufficient
2)K is a prime number
k=7;n=6;m=2 (n-m=4)
k=7;n=5;m=3 (n-m=2)
Not Sufficient
Taking both together the answer will be k=11
k=12 aint prime and in k=13 n and m both =1 which does not satisfy m<n<k
