Teaching NVS PGT 2024 Test Series Mathematics Matrices Types of Matrices

If A = \(\left[ {\begin{array}{*{20}{c}} 1&{3 + x}&2\\ {1 - x}&2&{y + 1}\\ 2&{5 - y}&3 \end{array}} \right]\) is a symmetric matrix, then 3x + y is equal to?

1
-1
2
0
3
1
4
none of these
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