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2.) Of a classroom filled with 20 students, 2 will be selected to stay after school and correct homework for extra credit. How many combinations are possible? A.) 190 B.) 210 C.) 63 D.) 40
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2.) Of a classroom filled with 20 students, 2 will be selected to stay after school and correct

homework for extra credit. How many combinations are possible?
A.) 190
B.) 210
C.) 63
D.) 40

User Kyo Kurosagi
by
7.6k points

1 Answer

4 votes

Answer:

190

Explanation:

20C2 = (20*19)/(1*2) = 190

User Tau
by
7.4k points
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