Math, asked by victoriabelen2124, 8 months ago

Las autoridades del país están tomando la decisión de que regiones salen de cuarentena durante la primera quincena de septiembre, de todas las regiones del país se han considerado 9, 4 son de la zona norte, 5 de la zona sur, estas regiones son las que mantienen contagios menor a 100 personas las últimas 2 semanas. El ministro indica que sólo podrán salir de cuarentena 5 de ellas. Si cada región tiene la misma probabilidad de salir de cuarentena ¿cuál es la probabilidad que sean las regiones nortinas las que salgan de cuarentena?

Answers

Answered by amitnrw
1

Given :  There are 9 region , 4 north and 5 south.

5 Regions has to come out for Quarantine

To Find : Probability that North Region came out of Quarantine

Solution:

Total Region = 9

North = 4

South = 5  

5 Regions to  be selected

5 regions out of 9 can be selected in  ⁹C₅   =  126 Ways

North region selected completely

Hence 4 from north and 1 from South

Hence   ⁴C₄*⁵C₁   =  5   Ways

Probability that North Region comes out of Quarantine = 5/126

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