document.write( "Question 236105: Three coins are tossed in the air. what is the probability that exactly two of them turn up heads?
\n" ); document.write( "{hhh, hht, hth, htt, thh, tht, tth, ttt}
\n" ); document.write( "Exactly 2 heads ==> {hht, hth, thh}
\n" ); document.write( "P(exactly 2 heads) = 3/8.
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Algebra.Com's Answer #173831 by mathsteacher(28)\"\" \"About 
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