How many numbers can be formed using digits 0,1,2..........9 which is more than or equal to 6000 and less than 7000 and is divisible by 5 whereas any number can be repeated as many times?
Thousand Place must be filled with 6. =1
Unit place filled with either 0 or 5 because its divided by 5. =2
Hundredth place filled with remaining 8 digits. =8
Similarly, tenth place filled with 7 digits. =7
So, total positive integer =1×2×8×7=112