15 buses operate between Hyderabad and Tirupathi.The number of way | Filo
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Class 11

Math

Co-ordinate Geometry

Straight Lines

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buses operate between Hyderabad and Tirupathi.The number of ways can a man go to Tirupathi from Hyderabad by a bus and return by a different bus is

Correct Answer: Option(c)
Solution: While going ,number of ways to choose bus out of is .
While return trip, in order to come with different bus, number of buses left .
Number of ways to choose bus for return trip
So, the required number of ways for going and return
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