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1 . You flip a fair coin 6 times; the flips are independent of each other. Consider the events
  • A = "exactly 3 flips result in heads",
  • B = "at least 2 flips result in heads".
What is $\Pr(A|B)$?
(a)
20/57
(b)
19/57
(c)
18/57
(d)
17/57