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Question

The number of numbers between 3000 and 4000 which are divisible by 5, without repetition using digits 3,4,5,6,7,8 is 
  1. 12
  2. 24
  3. 60
  4. 120


Solution

The correct option is A 12
The required number is of the form 35
The middle two places can be filled in 4P2 ways 

4P2=4!2!=12 

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