Product Rule for Counting | GCSE Maths Pro

In this video we go through an easily forgotten topic called Product Rule for Counting. This is a question to gain some easy marks in the exams.

Comment down below if you have any questions!

Chapters:
0:00 Introduction
0:15 What is product rule for counting?
0:30 Q1. Simon needs to choose an outfit. He has 5 shirts, 3 pairs of trousers and 2 pairs of shoes to choose from. How many possible outfit combinations does he have?
1:56 Q2. Charlie is going to a restaurant. He can choose from 4 starters, 12 mains and 6 desserts. How many possible meal combinations can he choose from?
3:19 Q3a. Julia has to decide on a lock combination. The code needs to be 3 digits and each dial can be set from 1-9. How many possible combinations does she have to choose from?
4:33 Q3b. If the lock combination cannot repeat any of the same digits, how many combinations does Julia have to choose from?
6:47 Q4. There are 20 teams in the league. Each team has to play the other teams twice. How many matches are played?
7:57 Q5. Hayley is going to buy a new car. She can choose the colours for the car body, wheels and interior. There are 15 different car body colours and 4 different wheel colours. The total number of combinations Hayley can choose from is 420. How many interior colours are there?
10:06 Q6. Tom is going to buy a sofa and a coffee table. There are 12 different types of sofas and some different coffee tables. Could there be 202 possible combinations of sofa and coffee table?



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Welcome to the GCSE Maths Pro YouTube Channel! My name is Millie and I am a GCSE Maths tutor with 3+ years experience. I have created this YouTube channel to help a wider audience of students make some sense of GCSE Maths!