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probability

by Gurpinder » Fri Sep 17, 2010 10:29 am
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"Do not confuse motion and progress. A rocking horse keeps moving but does not make any progress."
- Alfred A. Montapert, Philosopher.
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by brijesh » Fri Sep 17, 2010 10:56 am
Gurpinder wrote:Image
probability= 5C3/ 2^5 = 10/32 or 5/16
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by Gurpinder » Fri Sep 17, 2010 11:26 am
can you explain please.

i was doing 1/2*1/2*1/2+1/2+1/2
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by debmalya_dutta » Sat Sep 18, 2010 10:52 am
Gurpinder wrote:can you explain please.

i was doing 1/2*1/2*1/2+1/2+1/2
Hi Gurpinder ,
Need to shed more light. Did not understand the reasoning behind
1/2*1/2*1/2+1/2+1/2
You need 3 favourable outcomes and your favourable outcome being a head .
Total number of outcomes when the coin is tossed = 2 ^ 5
Total number of favourable outcomes i.e. 3 heads and 2 Tails = 5C3 = 10
So probability = 10/32 = 5/16
@Deb
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