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The probability for a contractor to get a road contract is 34  and to get a building contract is 58 . The probability to get atleast one contract is 78 . The probability to get both the contracts is

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a
1750
b
12
c
1639
d
13

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detailed solution

Correct option is B

p(A∩B)=p(A)+p(B)−p(A∪B)             = 34+58−78=12


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