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# Probability

Mon 28 May, 2012 05:16 am
. Six pennies are flipped. What is the probability of getting
a. two heads and four tails?
c. at most two tails?

2. A bag contains one red marble and one white marble. Marbles
are drawn and replaced in a bag before the next draw.

a. What is the probability that a red marble will be drawn two
times in a row?
b. In ten draws, what is the probability that a red marble will
be drawn at least five times.

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Mame

0
Mon 28 May, 2012 06:10 am
@abclas3,
who cares?
0 Replies

1
Mon 28 May, 2012 09:10 am
@abclas3,
...what are combinatorics?
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engineer

2
Mon 28 May, 2012 09:56 am
@abclas3,
Six pennies
a) 15/64
b) 21/32
c) 11/32

Marbles
a) 25%
b) 319/512
abclas3

1
Tue 26 Jun, 2012 02:45 am
@engineer,
Thanks for your answer.. Good to see at least one exact solution....

Regards
_________
Abacus Franchise | Aloha

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