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Q.
If a man and his wife enter in a bus, in which five seats are vacant, then the number of different ways in which they can be seated is
A.
2
B.
5
C.
20
D.
40
E.
None of the above
View Answer
Correct choice: C
Explanation:
There are five seats in a bus are vacant. A man sit on any one of 5 seats in 5 ways. After the man is seated, his wife can be seated in any of 4 remaining seats in 4 ways. Hence total number of ways of seating them = 5×4=20.
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