A boy wants to go abroad by boat and return by flight. He has a choice of 5 different boat to go and 5 flight to return. In how many ways, can the boy perform his journey? Choose the correct answer:
A) 20
B) 25
C) 30
D) 40
E) 50
Ans.(B)   Sol. Number of choices to go by ship = 5 Number of choices to return by airline = 5 From, fundamental principle, total number of ways of performing the journey = 5 x 5 = 25 ways
<result>B</result>
A boy wants to go abroad by boat and return by flight. He has a choice of 5 different boat to go and 5 flight to return. In how many ways, can the boy perform his journey?