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In a box there are 13 white chips, 7 blue chips, 6 green chips. Two chips are drawn in succession. What is the probability that the two chips contain one white chip and one blue chip?
option
a) 7/50
b) 8/30
c) 7/25
d) 20/26
Read Solution (Total 10)
-
- 7/25 -- ANS
- 11 years agoHelpfull: Yes(21) No(1)
- (13c1*7c1)/26c2=7/25
- 11 years agoHelpfull: Yes(6) No(0)
- 13c1 * 7c1 / 26c2 = 13*7/26*25= 7/50
- 11 years agoHelpfull: Yes(5) No(7)
- 7C1+13C1/26C2==7/25
- 10 years agoHelpfull: Yes(2) No(0)
- 13/26*7/25=7/50
- 11 years agoHelpfull: Yes(1) No(15)
- 7/50
guess
- 10 years agoHelpfull: Yes(1) No(2)
- (13c1*7c1)/26c2=(13*7)/(25*26)=7/50
- 10 years agoHelpfull: Yes(1) No(1)
- (13/26*7/25)*2(as there are two ways to select white and blue as White-Blue or Blue-White)
- 7 years agoHelpfull: Yes(0) No(0)
- 13c1*7c1/26c2=7/25
- 7 years agoHelpfull: Yes(0) No(0)
- the possibility of white chip is =13c1
the possibility of blue chip is = 7c1
total number of chips = 13+7+6 = 26
in that we are drawn two chips then it becomes 26c2
therefore,
(13c1*7c1)/26c2=(13*7)/(26*25/1*2) = 7/25. - 5 years agoHelpfull: Yes(0) No(0)
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