B.USE THE COUNTING PRINCIPLE

21. - GMAT EXAM SUCCESS EPISODE 2 PART 11 PPS
GMAT EXAM SUCCESS EPISODE 2 PART 11 PPS
21. b.Use the counting principle: Take the number of choices you have for each course and multiply themtogether to get the total possible combinations.x×(y+ 1)×z. Use the distributive property to sim-plify to xyz+ xz.