AP EAMCET Engineering 2011 Solved Paper

The five digit number is formed only when unit place is either 0 or 5 .
Case I. When 0 is in unit place, then rest of numbers can be selected in ‌5P4 ways.
=5!=120
Case II. When 5 is in unit place, then rest of numbers can be selected in ‌5P4 ways.
=5!=120
And we have to subtract those cases in which 0 is in thousand place.
The number of ways =‌4P3=24
∴ Required number of ways =120+120−24=216