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1 . We choose an element $x$ uniformly at random from the set $\{1,2,3,...,10\}$. Define the events
  • A = "$x$ is even",
  • B = "$x$ is divisible by 3".
What is the conditional probability $\Pr(A|B)$?
(a)
1/2
(b)
1/3
(c)
2/3
(d)
3/10