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If |{:(2,4,0),(0,5,16),(0,0,1+p):}|=20, ...

If `|{:(2,4,0),(0,5,16),(0,0,1+p):}|=20`, then what is the value of p?

A

0

B

1

C

2

D

5

Text Solution

Verified by Experts

The correct Answer is:
B
`|{:(2,4,0),(0,5,16),(0,0,1+p):}|=20`
On expanding along `C_(1)`,
`2{5(1+p)-0}=20`
`rArr 1+p=2`
`rArr p = 1`
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