I have trouble understanding the 7th question in Week 2 Chllenge
The question is "number of ways to choose an odd number of students from a class of people". After reading the explanation, I still don't understand, especially the 1st sentence of the explanation. Please help explain this to me.
@amusingminnow Hi Edward, thanks so much for writing. Since you are asking about an exam question, we'll answer over email instead of here on the forum, just to keep the exam questions private. Thanks for understanding!