Let A = \left[ {\matrix{
2 & 3 \cr
a & 0 \cr
} } \right], aR be written as P + Q where P is a symmetric matrix and Q is skew symmetric matrix. If det(Q) = 9, then the modulus of the sum of all possible values of determinant of P is equal to :
JEE Main 2021 · 20 Jul, Morning shift · Q4646