Probability of intersection

Three students have a probability of 0.7,0.5, and 0.4 to graduate from university, respectively. What is the probability that at least one of them will be graduated?

Correct answer:

p =  0.91

Step-by-step explanation:

p1=0.7 p2=0.5 p3=0.4  p=p1+p2+p3p1 p2p2 p3p3 p1+p1 p2 p3=0.7+0.5+0.40.7 0.50.5 0.40.4 0.7+0.7 0.5 0.4=0.91



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