document.write( "Question 1105149: Assume the probability that you will make a sale on any given telephone call is 0.150.15. Find the probability that you​ (a) make your first sale on the fifth​ call, (b) make your sale on the​ first, second, or third​ call, and​ (c) do not make a sale on the first three calls \n" ); document.write( "
Algebra.Com's Answer #720080 by Boreal(15235)\"\" \"About 
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This is 0.85^4*0.15=0.0783
\n" ); document.write( "Sale on the first call is 0.15
\n" ); document.write( "make first sale (note editing) on second call is 0.85*0.15=0.1275
\n" ); document.write( "Make first sale on third call is 0.85^2*0.15=0.1084
\n" ); document.write( "Make no sale on first three calls is 0.85^3=0.6141
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