Binomial Distribution (Wiley Study Guide)

[archived_user]

https://drive.google.com/open?id=1psPdwdZlbPSkbwLzMWjz_3hIji0xgiO-
Can someone explain if the answer is 29% (which i believe to be correct) or .829%?
The last paragraph has confused me as making ‘exactly’ 3 sales is the same as making ‘only’ 3 sales, isnt it?
Thanks

 

[archived_user]

The probability of one specific combination is 0.829%. Multiply by all possible combinations to get 29%.