Mrs Green is teaching a class of eight students, which she knows consists of four pairs of “Best Friends”. She needs to divide them into pairs for an activity, but she also knows that if she puts any pair of best friends together then they will chat all lesson and get no work done.

How many ways can she put them into productive pairs?

(In reply to Different answer by Larry)

I've modified my post.

Posted by Charlie on 2024-07-29 11:10:40