Q .     If `P=[(1,alpha,3) , (1,3,3) , (2,4,4) ]` is the adjoint of a `3 × 3` matrix `A` and `|A|` `= 4`, then `alpha` is equal to

JEE 2013 Mains
A

` 11`

B

`5`

C

`0`

D

`4`

HINT

Use `|adjA|=|A|^(n-1)`
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