Problem – 1
A particular brand of shirt comes in 10 colors, has a male version and a female version, and comes in 4 sizes for each sex. How many different types of this shirt are made?
Solution:
Different types of shirts are made for male = 10×4 = 40 types
Different types of shirts are made for female = 10×4 = 40 types
So total different types of shirt = 40 + 40 = 80