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The odds against an event are 5 to 2 and...

The odds against an event are 5 to 2 and the odds in favour of another disjoint event are 3 to 5. Then the probability that one atleast of the event will happen is

A

`(29)/(30)`

B

`(49)/(50)`

C

`(17)/(50)`

D

`(37)/(56)`

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The correct Answer is:
D
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