document.write( "Question 388907: You select at random 2 numbers from 1 to 8. What is the probability that the sum of two numbers selected is 3? Answer should be as a common fraction. \n" ); document.write( "

Algebra.Com's Answer #275326 by jrfrunner(365) $\"\"$ $\"About$

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The answer depends on whether you are selecting with replacement of the selected numbers or without replacement of the selected numbers.
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\n" ); document.write( "In order for the two numbers to sum to 3, the numbers selected must be 1 and 2.
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\n" ); document.write( "Without replacement:
\n" ); document.write( "Probability of selecting 1 and 2=P(1,2)+P(2,1)=1/8*(1/7)+1/8*(1/7)=2/56=1/28
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\n" ); document.write( "with replacement:
\n" ); document.write( "P(1,2)+P(2,1)=1/8*(1/8)+1/8*(1/8)=2/64=1/32\r
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