+0  
 
-1
70
3
avatar+69 

How many different sequences of ten flips of a coin have at least 8 heads?

rohitaop  May 18, 2018
 #1
avatar+87639 
+1

8 heads =  C(10,8)   = 45

9 heads  = C(10,9)  = 10

10 heads   = 10

 

 

So.....the number of sequences with at least  8 heads  is

 

45 + 10 + 1  =

 

56

 

 

cool cool cool

CPhill  May 18, 2018
edited by CPhill  May 18, 2018
 #2
avatar
0

Minor typo. Should be 56.

Guest May 18, 2018
 #3
avatar+87639 
0

No...I just can't add  !!....LOL!!!

 

 

cool cool cool

CPhill  May 18, 2018

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