Find the probability. An IRS auditor randomly selects 3 tax returns (without replacement) from 47 returns of which 5 contain errors. What is the probability that she selects none of those containing errors?
A. 0.0012

B. 0.0006

C. 0.708

D. 0.7136

Question

Find the probability. An IRS auditor randomly selects 3 tax returns (without replacement) from 47 returns of which 5 contain errors. What is the probability that she selects none of those containing errors? 
 A. 0.0012  
 
 B. 0.0006  
 
 C. 0.708  
 
 D. 0.7136

anonymous · Answer

$$\frac{42}{47}\times \frac{41}{46}\times \frac{40}{45}$$whatever that is

anonymous · Answer

reasoning that if 5 contain errors then 42 do not, then as before pick one without an error, leaves 46 to choose from of which 41 do not contain errors etc

anonymous · Answer

i know you need the decimal right? http://www.wolframalpha.com/input/?i=42%2F47*41%2F46*40%2F45