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A coin is tossed 10 times. How many different sequences of tosses could there have been, if at least $5$ of the tosses were heads?

 Oct 7, 2021
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At LEAST 5    means  5  or 6  or 7   or 8  or   9  or 10  could have been Heads ....

 

10c5   + 10c6    + 10c7   + 10c8   + 10c9   + 10c10 = ______________

 Oct 7, 2021

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