document.write( "Question 183577: what is the formula for probability of anumber out of many numbers,example probability of 6 numbers out of 42 numbers \n" ); document.write( "
Algebra.Com's Answer #137799 by stanbon(75887)\"\" \"About 
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The probability of an event
\n" ); document.write( "= (# or ways to succeed)/(# of ways to succeed + # of ways to fail)
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\n" ); document.write( "Your Problem:
\n" ); document.write( "If you have a bag with 6 red marbles and a total of 42 marbles,
\n" ); document.write( "the probability of selecting a red marble from the bag is
\n" ); document.write( "6/42 = 3/21 = 1/7
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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