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A coin is tossed 10 times, and at least 8 of the tosses were heads. How many different sequences of tosses could there have been?

 Jan 15, 2020
 #1
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At least 8 means that   either 8, 9 or 10  heads were tossed

 

So  we have

 

C(10, 8)  + C(10,9)  + C(10,10)  =

 

45   +  10   +     1   =

 

56 possible sequences

 

 

cool cool cool

 Jan 15, 2020

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