In four schools \[{{B}_{1}},{{B}_{2}},{{B}_{3}},{{B}_{4}}\] the percentage of girls students is 12, 20, 13, 17 respectively, From a school selected at random, one student is pick up at random and it is found that the student is girl, the probability that the school selected is \[{{B}_{2,}}\]is

In four schools \[{{B}_{1}},{{B}_{2}},{{B}_{3}},{{B}_{4}}\] the percen

1.	In four schools \[{{B}_{1}},{{B}_{2}},{{B}_{3}},{{B}_{4}}\] the percentage of girls students is 12, 20, 13, 17 respectively, From a school selected at random, one student is pick up at random and it is found that the student is girl, the probability that the school selected is \[{{B}_{2,}}\]is
A.	\[\frac{6}{31}\]
B.	\[\frac{10}{31}\]
C.	\[\frac{13}{62}\]
D.	\[\frac{17}{62}\]
Answer» C. \[\frac{13}{62}\]

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In four schools \[{{B}_{1}},{{B}_{2}},{{B}_{3}},{{B}_{4}}\] the percentage of girls students is 12, 20, 13, 17 respectively, From a school selected at random, one student is pick up at random and it is found that the student is girl, the probability that the school selected is \[{{B}_{2,}}\]is

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