Answer:
1. 2
2. 1
3. (n-1)!/(n-r)!r!
Step-by-step explanation:
Di ako sure sa 3 T^T
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Answers & Comments
Answer:
1. 2
2. 1
3. (n-1)!/(n-r)!r!
Step-by-step explanation:
Di ako sure sa 3 T^T