llustration 16.17. The contents of 3 vessels 1, 2 and 3 are as fol- lows: 1 white, 2 red, 3 black balls 2 white, 3 red, 1 black balls, and 3 white, 1 red, 2 black balls. A vessel is chosen at random and from it 2 balls are drawn at ran- dom. The two balls are one red and one white. What is the probability that they come from the second vessel. Scanned with CamScanner

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