Answer:
Let
the given determinant is
where
(i) If either
of a11 of a22 is zero, then
Therefore, we
must take
?
(1)
(ii) If a12
= a21 = 1, then by (1)
If {a12
= 0 and a21 = 1}; {a12 =1 and a21 = 0}
and {a12
= a21 = 0}; then by (1)
(Probability
of chosen of a11 = 1, a22 = 1,
a12 =
0, a21 = 1)
(Probability of chosen
of a11 = 1, a22 = 1, a12= 1, a21 =
0)
(Probability of chosen
of a11 = 1, a22 = 1, a12= 1, a21 =
0)
Required
probability
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