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CBSE Class 12 Math 2020 Delhi Set 1 Solved Paper

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Question : 2 of 36
Marks: +1, -0
If AA is a 3×33 \times 3 matrix such that ∣A∣=8|A| = 8, then ∣3A∣|3A| equals.
Solution:     👈: Video Solution
∵∣A∣=8\because |A| = 8
∴∣3A∣=33∣A∣=27×8=216.\therefore |3A| = 3^3 |A| = 27 \times 8 = 216.
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