Published by:
CGP EDU Academic Team
Published on: August 12, 2026
If A = 
and A adj A = A A T , then 5a + b is equal to
Text Solution
Verified by ExpertsThe correct answer is:
A
Sol. 
⇒ (10a + 3b) 
⇒ 25a 2 + b 2 = 10a + 3b & 15a – 2b = 0 & 10a + 3b = 13
⇒ 10a + 
= 13 ⇒ 65a = 2 × 13
⇒ a = 
⇒ 5a = 2
⇒ 2b = 6 ⇒ b = 3
∴ 5a + b = 5
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