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Of 10 mangoes, 4 are rotten. When 2 mangoes are taken out together, one mango is found to be good. The probability that the other mango is also good is: a)1/3 b)5/9 c)5/13 d)8/15 Plz explain..

Of 10 mangoes, 4 are rotten.


When 2 mangoes are taken out together, one mango is found to be good.


The probability that the other mango is also good is:


a)1/3


b)5/9


c)5/13


d)8/15


Plz explain..

Grade:12

1 Answers

sushant singh
66 Points
12 years ago

hey kartik

to get one good mango out of 2 taken from group of 10...

means ...

good mangoes =6 , so getting one good out of it is 6C1

and for one bad is 4C1

and total selection is 10C2

therefore the answer is = (6C1 x 4C1 )/ 10C2

                                 = 8/15

Options d) Answer

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