January 2020 1 181 Report
Um aluno, responde a 30 perguntas diarias no Brainly, sabendo que a probabilidade de ele receber melhor resposta e de 25% qual a probabilidade de ele receber exatamente 3 melhores respostas.

A) 4060.(1/4)³.(3/4)^27
B) 4060.(25/100)².(75/100)^27
C) 4030.0,25³.0,75^27
D) 4060.25/100.75/100
E) 75/100-25/100
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