Brad has 7 autographed baseballs. His display case only holds 5 baseballs. How many different displays can Brad make?

A.
21

B.
2520

C.
5040

D.
840
@daddyfatnut

Question

Brad has 7 autographed baseballs. His display case only holds 5 baseballs. How many different displays can Brad make?  
 
 

 

 
  

  A. 
  21   
   

 

 
  

  B. 
  2520   
   

 

 
  

  C. 
  5040   
   

 

 
  

  D. 
  840  
@daddyfatnut

kropot72 · Answer

this can be solved by finding the number of combinations of the 7 baseballs taken 5 at a time, which is:
$$\frac{7!}{5!2!}=\frac{7\times6}{2}=you\ can\ calculate$$

anonymous · Answer

sorry i didnt meen to say that lol i was trying to help someone else youre answer is 21

kropot72 · Answer

Yes, 21 combinations is correct.