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If lambda "and" mu are the cofactors of ...

If `lambda "and" mu` are the cofactors of 3 and -2 respectively in the determinant `|{:(1,0,-2),(3,-1,2),(4,5,6):}|` the value of `lambda+mu` is

A

5

B

7

C

9

D

11

Text Solution

Verified by Experts

The correct Answer is:
C
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Knowledge Check

  • If A = [(2,3,4),(-1,2,5)] and B = [(1,2),(3,-4),(-5,6)] then value of AB is

    A
    `[(9,16),(20,40)]`
    B
    `[(-9,16),(30,40)]`
    C
    `[(-9,16),(30,-40)]`
    D
    None of these

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