The quiet ones

Consider this mini social network of fifty people. Each person on the network is represented by an integer. The social network is represented as a matrix \(A\). If person \(i\) and \(j\) are "friends" then, \(A_{ij}=1\) else \(A_{ij}=0\). . How many mutual friends do the two people with the least number of mutual friends have?

Details and Assumptions

  • \(A_{xx}=0\).
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