Question

if a is a square matrix of order 3×3 such that ladj A1 =324, then the possible value of |a| is equal to

(a) 24 (b) 72

(c) 18 (d) 27​

Answer 1

Answer:

answer a is the correct answer

Answer 2

Answer:

(c) 18

Step-by-step explanation:

|adj. A| = |A|^n-1

324 = |A|^3-1

324 = |A|^2

√324 = |A|

|A|= 18