How many five-digit numbers can be made having exactly two identical digits?

How many 3-digit numbers can be made using digit 1,2,3,4,6,7 if no digit is repeated ?

How many 3-digit numbers can be formed by using the digits 1 to 9 if no digit is repeated?

How many 3-digit numbers can be formed by using the digits 1 to 9 if no digit is repeated?

How many two-digit numbers are divisible by 3?

How many three-digit numbers are divisible by 7?

How many 3-digit even numbers can be made using the digits 1,2,3,4,6,7 if no digit is repeated?

How many 4-digit numbers can be formed by using the digits 1 to 9 if repetition of digits is not allowed?

How many 4-digit numbers are there with no digit repeated?

How many three-digit odd numbers can be formed by using the digits 0,1,2,3,4,5 ? If (i) the repetition of digits is not allowed (ii) the repetition of digits is allowed