Question

There are 4 different math courses, 5 different science courses, and 2 different history courses. If a student must take one of each, how many different ways can this be done?

Answer 1

A student can take three subjects in 40 ways.

SOLUTION:

Given that, there are 4 different math courses, 5 different science courses, and 2 different history courses.

A student must take one of each, how many different ways can this be done?

Now, number ways to take math course = 4

Number of ways to take science course = 5  

Number of ways to take history course = 2

So, now, total possible ways = product of possible ways for each course = 4 x 5 x 2 = 40 ways.

Hence, a student can take three subjects in 40 ways.