Question

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?

Answer 1

The numbers which are more than or equal to 6000 and less than 7000 and is divisible by 5 has 6 on thousand’s place and 0 or 5 on one’s place and the number is 4 digits number. 

As digits can be repeated.

Hence,

Total numbers = 1 × 10 × 10 × 2 = 200