Respuesta :

starxin
That's we can solve by using a combination algorithm: [tex]C^4_{30}=\frac{30*29*28*27}{4*3*2*1} = 27405[/tex]
mreijepatmat
If the order doesn't matter then you have to apply the combination formula:

³⁰C₄ = (30!)/(4!)(30-4)! = 27,405 WAYS

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