How many numbers are there between 100 and 1000 which have exactly one of their digits as 7?

How many numbers are there between 500 and 1000 which have exactly one of their digits as 8.

(i) How many numbers are there between 100 and 1000 such that at least one of their digits is 7 ? (ii) How many of them have exactly one of their digits as 7 ?

How many numbers are there between 100 and 1000 such that at least one of their digits is 7?

How many numbers are there between 100 and 1000 such that at least one of their digits is 7 ?

How many of them have exactly one of their digits as 7 ?

How many numbers are there between 100 and 1000 which will divisible by 10?

How many numbers are there between 100 and 1000. Repetation is allowed.

How many numbers between 100 and 1000 have the digit 7 exactly once?

How many numbers are there between 100 and 1000 in which all the digits are distinct?