Question 1183545
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Find the probability of selecting 5 science books and  3 math books from  science books and  math books. 
The books are selected at random.
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In your post,  some vitally important part of the input is  MISSED,  making the solution  IMPOSSIBLE.



Read your post;  compare it with your source;  find the error and fix it;  then re-post to the forum.


PLEASE  do not post it to me personally.




Also,  please,  do not post your anathema to me . . . as some other visitors do . . . 


Instead,  you better post your  "THANKS"  to me for pointing your error.