Correct option is D
First entry : There are 4 possible choices (1, 2, 3, or 4).
Second entry : There are 4 possible choices (1, 2, 3, or 4).
Third entry : There are 4 possible choices (1, 2, 3, or 4).
Fourth entry : There are 4 possible choices (1, 2, 3, or 4).
⟹ 768 ways
then the value of abc is:
is a singular matrix, then the value of x is:
is a symmetric matrix, then the value of K is: