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29 Apr 2016, 07:49
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D
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Difficulty:
95%
(hard)
Question Stats:
45% (02:05) correct
55%
(02:18)
wrong
based on 116
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If there are eight varities of icecream to be tasted and judged in a competition, what is the probability that black currant is tasted before Vanilla and Vanilla is tasted before chocolate, although not necessarily consecutively?
(A) 1/8!
(B) 3!/8!
(C) 5!/8!
(D) 1/3!
(E) 1/2!
self made
(A) 1/8!
(B) 3!/8!
(C) 5!/8!
(D) 1/3!
(E) 1/2!
self made
29 Apr 2016, 09:26
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8 flavors are too much. Lets try out only 3 flavors --> Black Currant, Vanilla, Chocalate
We can get Black Currant before Vanilla and Vanilla before Chocolate in only 1 way.
Probability = Possible/Total = 1/3!
Now lets consider 4 flavors --> BC, Van, Choc and X
Possibilities --> 1) BC, X, Van, Choc
2) X, BC, Van, Choc
3) BC, Van, Choc, X
4) BC, Van, X, Choc
Probability = 4/24 = 1/3!
Since the probability remains the same for both the cases, the probability will mostly remain true for the 8 varieties too.
Answer: D
We can get Black Currant before Vanilla and Vanilla before Chocolate in only 1 way.
Probability = Possible/Total = 1/3!
Now lets consider 4 flavors --> BC, Van, Choc and X
Possibilities --> 1) BC, X, Van, Choc
2) X, BC, Van, Choc
3) BC, Van, Choc, X
4) BC, Van, X, Choc
Probability = 4/24 = 1/3!
Since the probability remains the same for both the cases, the probability will mostly remain true for the 8 varieties too.
Answer: D
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29 Apr 2016, 11:47
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i chose c.
please let me know how the correct answer is solved for..
please let me know how the correct answer is solved for..
