Q45
The rank of the matrix \[ [ array*20c - 4&1& - 1 \\ - 1& - 1& - 1 \\ 7& - 3&1 array ]\] is
The rank of the matrix \left[ {\begin{array}{*{20}{c}}
{ - 4}&1&{ - 1} \\
{ - 1}&{ - 1}&{ - 1} \\
7&{ - 3}&1
\end{array}} \right] is
A.
1
B.
2
AnswerC.
3
D.
4
Answer: Option B
Solution
Answer: Option B
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