Question
An archer misses the target on her first shot and hits the target on the next 3 shots. What is the least number of consecutive shots that she must now make in order to have hit the target on at least 9/10 of all her shots?
( please show work on how to derive the answer!! Thx!)
A) 5
B) 6
C) 7
D) 9
E) 10
( please show work on how to derive the answer!! Thx!)
A) 5
B) 6
C) 7
D) 9
E) 10