20. Let n1 and n2 be the no. of red and black balls , respectively , in box I . Let n3 and n4 be the no. of red and black balls , respectively , in box II . One of the two boxes , box I and box II , selected at random and a ball was drawn randomly out of this box . The ball was found to be red . If the probability that this red ball was drawn from box II is 1/3 , then the correct options with the possible values of n1 , n2 , n3 and n4 is (1) n1 = 3 , n2 = 3 , n3 = 5 , n4 = 15 (2) n1 = 3 , n2 = 6 , n3 = 10 , n4 = 50 (3) n1 = 8 , n2 = 6 , n3 = 5 , n4 = 5 (4) n1 = 6 , n2 = 12 , n3 = 5 , n4 = 20

20. Let n1 and n2 be the no. of red and black balls , respectively , i

1.	20. Let n1 and n2 be the no. of red and black balls , respectively , in box I . Let n3 and n4 be the no. of red and black balls , respectively , in box II . One of the two boxes , box I and box II , selected at random and a ball was drawn randomly out of this box . The ball was found to be red . If the probability that this red ball was drawn from box II is 1/3 , then the correct options with the possible values of n1 , n2 , n3 and n4 is (1) n1 = 3 , n2 = 3 , n3 = 5 , n4 = 15 (2) n1 = 3 , n2 = 6 , n3 = 10 , n4 = 50 (3) n1 = 8 , n2 = 6 , n3 = 5 , n4 = 5 (4) n1 = 6 , n2 = 12 , n3 = 5 , n4 = 20
Answer» 20. Let n1 and n2 be the no. of red and black balls , respectively , in box I . Let n3 and n4 be the no. of red and black balls , respectively , in box II . One of the two boxes , box I and box II , selected at random and a ball was drawn randomly out of this box . The ball was found to be red . If the probability that this red ball was drawn from box II is 1/3 , then the correct options with the possible values of n1 , n2 , n3 and n4 is (1) n1 = 3 , n2 = 3 , n3 = 5 , n4 = 15 (2) n1 = 3 , n2 = 6 , n3 = 10 , n4 = 50 (3) n1 = 8 , n2 = 6 , n3 = 5 , n4 = 5 (4) n1 = 6 , n2 = 12 , n3 = 5 , n4 = 20