1
BITSAT 2021
MCQ (Single Correct Answer)
+3
-1

Matrix $$A = \left| {\matrix{ x & 3 & 2 \cr 1 & y & 4 \cr 2 & 2 & z \cr } } \right|$$, if xyz = 60 and 8x + 4y + 3z = 20, then A(adj A) is equal to

A
$$\left[ {\matrix{ {64} & 0 & 0 \cr 0 & {64} & 0 \cr 0 & 0 & {64} \cr } } \right]$$
B
$$\left[ {\matrix{ {88} & 0 & 0 \cr 0 & {88} & 0 \cr 0 & 0 & {88} \cr } } \right]$$
C
$$\left[ {\matrix{ {68} & 0 & 0 \cr 0 & {68} & 0 \cr 0 & 0 & {68} \cr } } \right]$$
D
$$\left[ {\matrix{ {34} & 0 & 0 \cr 0 & {34} & 0 \cr 0 & 0 & {34} \cr } } \right]$$
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