Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Let for 
,|A|= 2. If |2adj(2adj(2A))| = 32 n , then 3n + 
is equal to
Text Solution
Verified by ExpertsThe correct answer is:
B
Given that 
|A| =2
1(6- l)- 
-7 = 2
- 
-2=2
=-4
|2adj(2adj(2A))|=32 n
We know that |kA|= k n |A|, adj (adj ) = 
and adj(kA)= k n-1 adj(A).
= 2 3 |adj(2adj(2A))|
= 2 3 |2 3-1 adj (adj (2A)) |
= 2 3 - 3 |adj(adj(2A))|
= 2 9 .|2A| 4
= 2 9 .2 12 |A| 4
= 2 21 .2 4 = 2 25 = (32) n = 5n
n = 5
Hence this is the correct option.
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