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OpenStudy (anonymous):
You flip 3 coins. Use a tree diagram to calculate the probability that you get exactly 2 heads.
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OpenStudy (amistre64):
we do tend to get this alot dont we ...
OpenStudy (anonymous):
yes. i suck horribly at math. so sorry
OpenStudy (amistre64):
000 all tails 001 010 100 011 101 110 111 all heads
OpenStudy (amistre64):
exactly 2 heads (1,1) is 3 out of 8 ways
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