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On (A={1,2,3}), the matrix of relation (R) is (\begin{pmatrix}1&1&0\0&1&1\0&1&1\end{pmatrix}). Which minimum entry must be changed for symmetry?

Answer and explanation

Correct answer: Make (m_{21}) equal to (1)

Step 1: For a symmetric relation matrix, (m_{ij}=m_{ji}). Step 2: Here (m_{12}=1) but (m_{21}=0), while the other opposite entries match. Step 3: So changing only (m_{21}) to (1) makes the matrix symmetric.

Related tags

Matrix CorrectionSymmetric RelationMinimum ChangeRelations And FunctionsMathematicsClass 12 Mcq

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