to apply for the position of photographer at a local magazine , a photographer needs to include 4 or 5 photos in an envelope accompanying the application . if the photographer has pre - selected 7 photos representative of her work , how many choices does she have to provide the photos for the magazine ? Choose the correct choice from the following options
A) 48  B) 50  C) 52  D) 54  E) 56

Rationale: 7 c 4 + 7 c 5 = 35 + 21 = 56 the answer is e .
Answer: E