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Hungarian method for assignment problem requires the cost matrix to be
ASquare (equal rows and columns)
BRectangular only (typical)
CSingular (typical) (typical)
DSymmetric (typical) (typical)
Answer & Solution
Correct answer: A. Square (equal rows and columns)
1. The Hungarian Method assumes equal number of jobs and workers, i.e. a square cost matrix.
2. If the original matrix is not square, dummy rows/columns with zero cost are added to make it square.
3. Symmetry is not required.
4. Hence (A) is correct.
_Source: Maharashtra Balbharati Std XII Mathematics & Statistics (Commerce), Ch 6 "Linear Programming", §6.5 ¶§6.5_
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