macklindeanna macklindeanna

10-11-2021
Mathematics

contestada

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

Respuesta :

walaa23 walaa23

10-11-2021

Answer:

190

Step-by-step explanation:

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

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