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Question

Mathematics Question on Determinants

The determinant of the matrix148 1927 11664\begin{vmatrix} 1 & 4 & 8\\\ 1 & 9 & 27\\\ 1 & 16 & 64 \end{vmatrix} is?

A

133

B

208208

C

104104

D

2626

E

5252

Answer

5252

Explanation

Solution

_Given that _

148 1927 11664\begin{vmatrix} 1 & 4 & 8\\\ 1 & 9 & 27\\\ 1 & 16 & 64 \end{vmatrix}

From the matrix:

=(64×927×16)4(64×27)+8(169)= (64 × 9 − 27 × 16) − 4(64 × −27) + 8(16 − 9)

=(576432)4×37+56= (576 − 432) − 4 × 37 + 56

=144148+56= 144 − 148 + 56

=52= 52 (_Ans)