A boy wants to go abroad by boat and return by flight. He has a choice of 9 different boat to go and 5 flight to return. In how many ways, can the boy perform his journey?  Choose the correct choice from the following choices:
A) 20 B) 25 C) 30 D) 45 E) 50
Ans.(D)   Sol. Number of choices to go by ship = 9 Number of choices to return by airline = 5 From, fundamental principle, total number of ways of performing the journey = 9 x 5 = 45 ways
<result>D</result>
A boy wants to go abroad by boat and return by flight. He has a choice of 9 different boat to go and 5 flight to return. In how many ways, can the boy perform his journey?