Answers

2016-01-15T16:50:10+08:00
7 sets nang integer un...


0
o.O ... I don't get your answer. Can you explain why? o.O
7 is way too small value for an answer. The problem involves a combination solution where the order does not matter (as against permutation). Sorry, CarlamainecolrAda, I have to report your answer because periodical exams is approaching and Grade 10 students must get the right answers.