Probability 28111

1. What is the probability that we write an even number from the numbers from 1 to 20?
2. We randomly draw one ticket From the eighteen tickets numbered 1 - 18. What is the probability that the ticket drawn will have:
a) a number divisible by 3
c) a prime number
d) a number divisible by 6

Correct answer:

p1 =  0.5
p2 =  0.3333
p3 =  0.3889
p4 =  0.1667

Step-by-step explanation:

p1=2010=21=0.5
3;6;9;12;15;18  p2=186=31=0.3333
2;3;5;7;11;13;17 p3=187=0.3889
6;12;18  p4=183=61=0.1667



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