If each element of a second order determinant is zero or one , what is the probability that the values of the determinant is positive?(Assume that the individual entries of the determinant are chosen independently, each value being assumed with probability12

If each element of a second order determinant is zero or one , what is

1.	If each element of a second order determinant is zero or one , what is the probability that the values of the determinant is positive?(Assume that the individual entries of the determinant are chosen independently, each value being assumed with probability12
Answer» If each element of a second order determinant is zero or one , what is the probability that the values of the determinant is positive?(Assume that the individual entries of the determinant are chosen independently, each value being assumed with probability $\frac{1}{2}$