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JEE Advance 2009
Paper-1
Question
Let $\mathscr{A}$ be the set of all $3 \times 3$ symmetric matrices all of whose entries are either 0 or 1 . Five of these entries are 1 and four of them are 0 .

The number of matrices in $\mathscr{A}$ is
Select the correct option:
A
12
B
6
C
9
D
3
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
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Question Tags
JEE Advance
Mathematics
Easy
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