Bayes' theorem. P(Ui)=31 for i=1,2,3.
P(R∣U1)=106, P(R∣U2)=104, P(R∣U3)=105.
P(U1∣R)=(1/3)(6/10+4/10+5/10)(1/3)(6/10)=156=52.
CUET UG 2022 — Mathematics Algebra
Three urns contain 6 red, 4 black; 4 red, 6 black and 5 red, 5 black marbles respectively. One of the urns is selected at random and a marble is drawn from it. If the marble drawn is red, then the probability that it is drawn from the first urn is
Held on 30 Aug 2022 · Verified 13 Jul 2026.
106
104
105
52
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