A Box has 13 white chips 7 blue chips and 6 green chips What is the probability that if two

(7c1/26c1)*(13c1/25c1)=7/50
11 years agoHelpfull: Yes(8) No(1)
(7c1/26c1)*(13c1/25c1)
11 years agoHelpfull: Yes(5) No(1)
in 1st time 1 bluechip is to be selected from 26,so probability is (7c1)/(26c1)=7/26
in 2nd time total chips will be 25 ,total probability is (7/26)(13/25)=7/50
11 years agoHelpfull: Yes(5) No(2)
(1st is blue and other is white) or (1st is white and other is blue)-->
(7C1/26C1)*(13C1/25C1) + (13C1/26C1)*(7C1/25C1) =7/25
8 years agoHelpfull: Yes(5) No(1)
BW+WB
7/26*13/25+13/26+7/25 =7/25
8 years agoHelpfull: Yes(2) No(0)
total 7 ways
11 years agoHelpfull: Yes(1) No(9)
(7c1/26c1)*(13c1/25c1)=7/50
11 years agoHelpfull: Yes(1) No(2)
total chips=23 pic 2 of it is 23p2
1 blue=7p1
1 white=13p1
then(7p1+13p1)/23p2
11 years agoHelpfull: Yes(0) No(1)
total chips=23 pic 2 of it is 23p2
1 blue=7p1
1 white=13p1
then(7p1+13p1)/23p2
11 years agoHelpfull: Yes(0) No(0)
(7c1/26c1)*(13c1/25c1)
=> 7/50
11 years agoHelpfull: Yes(0) No(1)
a 7c1*6c1/25c2
8 years agoHelpfull: Yes(0) No(0)
b: 7/26 + 13/26=20/26
6 years agoHelpfull: Yes(0) No(0)

A Box has 13 white chips, 7 blue chips and 6 green chips. What is the probability that, if two chips are drawn from the box in succession, one is blue and other is white.
option
a) 7/50
b) 20/26
c) 4/20