How many three-digit numbers are there, with no digit repeated?

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

How many three-digit numbers are there, with distinct digits, with each digit odd ?

How many 3-digit numbers are there without repetition?

How many three-digit numbers can be formed without using the digits 0, 2, 3, 4, 5 and 6?

How many three-digits numbers are divisible by 7 ?

From the digits 1, 2, 3, 4, 5, 6, how many three-digit odd numbers can be formed when the repetition of the digits is not allowed ?

How many even numbers are there with three digits such that if 5 is one of the digits, then 7 is the next digit ?