Question

A person wants to go somewhere by train and return by air. He has a choice of 8 different trains to go and 5 airlines to return. In how many ways can he plan his journey?.​

Answer 1

Answer:

2 ways to plan his journey.

Step-by-step explanation:

because he choose a train in 8 different trains to go and choice of air in 5 airlines to return.

Answer 2

Given:

Number of options of trains = 8

Number of options of airlines = 5

To find:

Number of ways in which he can plan his journey.

Solution:

Since the person goes to the destination by train:

Number of ways to choose a train = ⁸C₁ = 8

He returns by air:

Therefore number of ways to choose an airline = ⁵C₁ = 5

Total number of ways = 8*5 = 40

Therefore, number of ways he can plan his journey will be 40.