SOLUTION: Find the probability of selecting 5 math books and 4 history books from a stack that contains 6 math books and 4 history books if the books are selected at random.
Algebra.Com
Question 386764: Find the probability of selecting 5 math books and 4 history books from a stack that contains 6 math books and 4 history books if the books are selected at random.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Find the probability of selecting 5 math books and 4 history books from a stack that contains 6 math books and 4 history books if the books are selected at random.
------------------
# of ways to succeed:
# of ways to select 5 math: 6C5 = 6
# of ways to select 4 hist: 4C4 = 1
----
# of ways to succeed: 6*1 = 6
----------------
# of ways to select 9 books randomly: 10C9 = 10
-----
P(selecting 5 math and 4 hist) = 6/10 = 3/5
============================================
Cheers,
Stan H.
RELATED QUESTIONS
find the probability of selecting 4 science books and 4 math books from 8 science books (answered by Boreal)
Find the probability of selecting 5 science books and 3 math books from science books... (answered by ikleyn)
In how many ways can 4 different Math books, 5 different History books, and 2 different... (answered by Boreal)
In how many ways can 4 different Math books, 5 different History books, and 2 different... (answered by greenestamps)
Find the probability of selecting 5 science books and 3 math books from 7 science books... (answered by ikleyn)
Find the probability of selecting 5 science books and 3 math books from science books... (answered by ikleyn)
A bookshelf has 10 books, including 3 math books, 4 science books, and 3 history books.... (answered by greenestamps)
Find the probablity of selecting 3 science books and 4 math books from 8 science books... (answered by stanbon)
In how many ways can you arrange 11 math books and 6 history books if:
a. order matters
(answered by stanbon)