Determinants — Easy JEE math MCQThe value of $\begin{vmatrix} 1 & 2 \\ 3 & 4 \end{vmatrix}$ is:A. $-2$B. $2$C. $10$D. $-10$Solution$\begin{vmatrix} 1 & 2 \\ 3 & 4 \end{vmatrix} = 1(4) - 2(3) = 4 - 6 = -2$