let A `={{:({:(a_(11),a_(12)),(a_(21),a_(22)):}):a_(ij){0,1,2} and a_(11)=a_(22)}`
then the number of singular matrices in set A is

Let S={((a_(11), a_(12)),(a_(21), a_(22))):a_(ij) in {0,1,2},a_(11)=a_(22)} Then the number of non-singular matrices in the set S is

If A=[(a_(11),a_(12)),(a_(21),a_(22))] , then minor of a_(11) (i. e., M_(11)) is

If A=[(a_(11),a_(12)),(a_(21),a_(22))] , then minor of a_(11) (i. e., M_(11)) is

If Delta=|{:(a_(11),a_(12),a_(13)),(a_(21),a_(22),a_(23)),(a_(31),a_(32),a_(33)):}| then cofactor of a_23 represented as

If Delta=|{:(a_(11),a_(12),a_(13)),(a_(21),a_(22),a_(23)),(a_(31),a_(32),a_(33)):}| then cofactor of a_23 represented as

If Delta=|{:(a_(11),a_(12),a_(13)),(a_(21),a_(22),a_(23)),(a_(31),a_(32),a_(33)):}| and A_(ij) Cofators of a_(ij) then value of Delta is given by ……..

If A=[[a_(11),a_(12)],[a_(21),a_(22)]] is non - singular, find A^(-1) .

Delta=|(a_(11),a_(12),a_(13)),(a_(21),a_(22),a_(23)),(a_(31),a_(32),a_(33))| and A_(ij) is cofactor of a_(ij) then value of Delta is given by

If |A| = |(a_(11), a_(12), a_(13)),(a_(21),a_(22),a_(23)),(a_(31),a_(32),a_(33))| = 6 , then write down the value of |A^(-1)| .