Matrices & Determinants · JEE Main previous year questions

2005 1 question

1. Q272005 · 28 Apr 2005 · Shift 1

   If $a_1,a_2,a_3,\dots ,a_n,\dots$ are in G.P., then the determinant $\Delta =\left|\begin{array}{ccc}\log a_n& \log a_{n+1}& \log a_{n+2}\\ \log a_{n+3}& \log a_{n+4}& \log a_{n+5}\\ \log a_{n+6}& \log a_{n+7}& \log a_{n+8}\end{array}\right|$ is equal to :

   1. A.$1$
   2. B.$0$
   3. C.$4$
   4. D.$2$
   Show answer

   Answer: B