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28-07-2017
Mathematics

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Jorani flips two standard american quarters. how many ways can she get at least one head?

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apologiabiology apologiabiology

28-07-2017

at least means 1 or more head

she can get

1 head 1 tail
1 tail 1 head
2 tails
2 heads

3 of the ways has at least 1 head

3 ways

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