∣B∣=∣b11b21b31b12b22b32b13b23b33∣=∣30a1131a2132a3131a1232a2233a3232a1333a2334a33∣
⇒81=33⋅3⋅32∣A∣⇒34=36∣A∣⇒∣A∣=91
Let A=[aij] and B=[bij] be two 3×3 real matrices such that bij=(3)(i+j−2)aij , where i,j=1,2,3 . If the determinant of B is 81 , then determinant of A i s
Held on 7 Jan 2020 · Verified 6 Jul 2026.
31
3
811
91
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