Sarrus Rule

Q. Find value of Determinant using SarrUs Rule $\left|\begin{array}{ccc}1& 2& 6\\ 3& 1& 5\\ 7& 2& 1\end{array}\right|$

1. 40
2. 49
3. 54
4. 60

Q. Sarrus Rule says that determinant of the three colums on the left is the sum of products along dashed diagonals minus the sum of products along solid diagonals.

1. True
2. False

Q.

Value of the determinant $\left|\begin{array}{ccc}1& 3& 5\\ 3& 4& 5\\ 0& 2& 3\end{array}\right|is$___

Q. The value of $\Delta =\left|\begin{array}{ccc}1& 2& 4\\ -1& 3& 0\\ 4& 1& 0\end{array}\right|$ is