" If "I" is a "(9times9)" unit matrix,then rank "(I)=

If I is a (9xx9) unit matrix,then rank (I)=

If I_n is the identity matrix of order n, then rank of I_n is

If A is an idempotent matrix satisfying,(I-0.4A)^(-1)=I-alpha A, where I is the unit matrix of the name order as that of A, then th value of |9 alpha| is equal to

If A is an idempotent matrix satisfying, (I-0. 4 A)^(-1)=I-alphaA ,w h e r eI is the unit matrix of the name order as that of A , then th value of |9alpha| is equal to ________.

If A is an idempotent matrix satisfying, (I-0. 4 A)^(-1)=I-alphaA ,w h e r eI is the unit matrix of the name order as that of A , then th value of |9alpha| is equal to ________.

If A is an idempotent matrix satisfying, (I-0. 4 A)^(-1)=I-alphaA ,w h e r eI is the unit matrix of the name order as that of A , then th value of |9alpha| is equal to ________.

If I is unit matrix of order n, then 3I will be

If I is the unit matrix of order 10xx10 , then the determinant of I is equal to -

If I is a unit matrix of order 10, then the determinant of I is equal to