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31. Let A be the set of all 3*3 matrices which are symmetric with entries 0 or 1. If there are five 1 and four 0 , then number of matrices in A

Answer» 31. Let A be the set of all 3*3 matrices which are symmetric with entries 0 or 1. If there are five 1 and four 0 , then number of matrices in A


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