document.write( "Question 1056943: A coin is tossed four times. Assuming that the coin is equally likely to land on heads or tails, compute the probability of the event occurring.
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Algebra.Com's Answer #671999 by jorel555(1290)\"\" \"About 
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Let's find the probability of three heads. This is 1/2 x 1/2 x 1/2. This is 1/8. So the probability of getting at least two tails is 1-1/8, or 7/8. ☺☺☺☺
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\n" ); document.write( "(Previous answer was WRONG! SORRY!)
\n" ); document.write( "After further review, we look at the problem a different way. The only possible permutaions are
\n" ); document.write( "HHHH, HHHT, HHTH, HTHH, THHH, HHTT, HTHT, HTTH,
\n" ); document.write( "TTTT, TTTH, TTHT, THTT, HTTT, TTHH, THTH, THHT
\n" ); document.write( "If we look at this, we see that there are 11 ways out of 16 in which we get at least 2 tails, making our probability 11/16, or .6875. ☺☺☺☺
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