Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES) The number of 3 x 3 non-singular matrices, with four entries as 1 and all other entries as 0, is - Sarthaks eConnect

The number of 3 x 3 non-singular matrices, with four entries as 1 and all other entries as 0, is

at least 7

less than 4

Solution

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Best answer

`[[1,...,...],[....,1,...],[...,...,1]]`

are 6 non- singular matrices because 6 blanks will be filled by 5 zeros and 1 one.