Answer:
a. 10
Step-by-step explanation:
formula: C(n,r) = n! / (n-r)! r!
= 5! / (5-3)! 2!
= 5. 4. 3! / 3! 2.1
= 20 / 2
= 10
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Answers & Comments
Answer:
a. 10
Step-by-step explanation:
formula: C(n,r) = n! / (n-r)! r!
= 5! / (5-3)! 2!
= 5. 4. 3! / 3! 2.1
= 20 / 2
= 10