FOR XAMPLE CONSIDER A 3X3 MATRIX FIND ITS DET IF DET IS NOT EQUAL TO 0 THEN ITS RANK IS 3 N IF DET=0 CONSIDER ANY 2X2 MATRIX OF THE GIVEN MATRIX IF DET IS NOT EQUAL TO 0 THEN RANK IS 2 IF NOT IF ANY ELEMENT IS NON ZERO THEN ITZ RANK IS 1.

 

NOTE :CHECK FOR AL POSSIBLE 2X2 MATRICES IF ANY ONE IS ALSO NON ZERO THEN RANK IS 2

 

IF GIVEN MATRIX IS NOT SQUARE MATRIX  CONSIDER ANY SQUARE MATRIX BY JUS LEAVIN ANY ONE XTR ROW OR COULMN

 

THIS IS AN EASY METHOD HOPE U UNDERSTAND MY XPLANATION