Question

answer the picture attached below

Answer 1

Answer:

Then A = 233 this is the correct answer

Answer 2

If

$A = \binom{2 \: \: 1 \: \: 0}{0 \: \: 2 \: \: 1 } \\ \: \: \: \: \: \: \: \: \: \: \: 0 \: \: 0 \: \: 2$

$|A|= \: 2(2 - 0) - 1(0 - 0) + 0(0 - 0) \\ = 2(2) - 0 + 0 \\ = 4 \\ |A|=4$

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