How many 8 digit numbers are there in all

How many 3 digit numbers are there in all?

how many 6 digit numbers are there in all?

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

How many two digit numbers are divisible by 4 ?

How many three digit numbers are divisible by 3?

How many 5 digited numbers can be made with odd digits so that no two consecuitive digits are same.

How many 4 digited numbers can be formed using 0, 1, 2,3,4 when repetition is allowed.

How many six digited numbers that can be formed with 1, 2, 3, 4 if all the digits are to appear in the same number atleast once.

How many two-digit numbers are divisible by 3?