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Maths Puzzle
A man & his wife appear in an interview for 2 vacancies in the same post.The probability of husband's selection is (1/7) & probability of wife's selection is (1/5). what is the probability that only one of them is selected?
a)4/5
b)2/7
c)8/15
d)4/7
e)2/5
f)8/12
g)1/3
h)1/2
Read Solution (Total 6)
-
- (6/7)*(1/5)+(1/7)*(4/5) = (6/35)+(4/35)= 10/35 = 2/7
- 14 years agoHelpfull: Yes(8) No(2)
- b.2/7
- 14 years agoHelpfull: Yes(3) No(1)
- 2/7
- 14 years agoHelpfull: Yes(3) No(1)
- 2/7
- 14 years agoHelpfull: Yes(2) No(1)
- ans b option
- 14 years agoHelpfull: Yes(2) No(1)
- 1/7 as there are 2 vacancies.
- 14 years agoHelpfull: Yes(1) No(3)
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