CUET · MATHS · PYQ PAPER 2025
If \(a_{i j}=i+3 j\), then the matrix of order 2 with elements as \(a_{i j}\) is
- A \(\left[\begin{array}{cc}4 & 7 \\ 5 & 12\end{array}\right]\)
- B \(\left[\begin{array}{cc}3 & 7 \\ 5 & 12\end{array}\right]\)
- C \(\left[\begin{array}{ll}4 & 7 \\ 5 & 8\end{array}\right]\)
- D \(\left[\begin{array}{cc}3 & 7 \\ 5 & 14\end{array}\right]\)
Answer & Solution
Correct Answer
(C) \(\left[\begin{array}{ll}4 & 7 \\ 5 & 8\end{array}\right]\)
Step-by-step Solution
Detailed explanation
\(a_{11} = 1+3(1) = 4\) \(a_{12} = 1+3(2) = 7\) \(a_{21} = 2+3(1) = 5\) \(a_{22} = 2+3(2) = 8\) \(\left[\begin{array}{cc}4 & 7 \\ 5 & 8\end{array}\right]\)
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