If {\A} is a 3 \times 3 matrix such that | {\A}|=8, then |3 {\A}| equals.

CBSE Class 12 Math 2020 Delhi Set 1 Solved Paper - Question 2

Question : 2 of 36

Marks: +1, -0

{\A}

is a

3 × 3

matrix such that

| {\A}|=8

, then

|3 {\A}|

equals.

Solution:

∵ | {\A}|=8

∴ |3 {\A}|=3^3| {\A}|=27 × 8=216 .

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