Question:medium
If set \( S \) has 10 elements and \( A=\{(x,y):x,y\in S, x\ne y\} \), number of elements in \( A \)
If set \( S \) has 10 elements and \( A=\{(x,y):x,y\in S, x\ne y\} \), number of elements in \( A \)
Show Hint
Ordered pairs count = \( n^2 \), subtract equal ones.
Updated On: May 1, 2026
- \( 100 \)
- \( 90 \)
- \( 80 \)
- \( 150 \)
- \( 45 \)
Show Solution
The Correct Option is B
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