The determinant $Δ=\begin{vmatrix}

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Target Exam

CUET

Subject

-- Mathematics - Section B1

Chapter

Determinants

Question:

The determinant $Δ=\begin{vmatrix}p&2-i&i+1\\2+i&q&3+i\\1-i&3-i&r\end{vmatrix}$ is

Options:

real

imaginary

zero

none of these

Correct Answer:

real

Explanation:

Since $Δ=\bar{Δ}⇒Δ$ is purely real.

Hence (A) is the correct answer.