document.write( "Question 451172: Suppose you are asked to pick 3 numbers from 1 to 20 to win a prize. What is the probability that one of the numbers you will pick is the winning number? \n" ); document.write( "
Algebra.Com's Answer #310266 by ewatrrr(24785)\"\" \"About 
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\n" ); document.write( "Hi,
\n" ); document.write( "Suppose you are asked to pick '3 numbers' from 1 to 20 to win a prize
\n" ); document.write( "Note: The probability of x successes in n trials is:
\n" ); document.write( "P = nCx* \"p%5Ex%2Aq%5E%28n-x%29\" where p and q are the probabilities of success and failure respectively.
\n" ); document.write( "In this case p(picking the winning number)= 1/20 and q = 19/20
\n" ); document.write( "nCx = \"n%21%2F%28x%21%28n-x%29%21%29\"
\n" ); document.write( " P(picking the winning number) = 3C1(.05)^1 (.95)^2 = .1354 \n" ); document.write( "
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