How many four digit natural numbers not exceeding 4321 can be formed with the digits 1, 2, 3 and 4, if the digits can repeat?

How many natural numbers not exceeding 4321 can be formed with the digits 1, 2, 3 and 4 if the digits can repeat ?

How many four digit natural numbers not exceeding the number 4321 can be formed using the digits1,2,3,4, if repetition is allowed?

How many numbers of 5 digits can be formed with the digits 0,1,2,3,4?

How many 2-digit even numbers can be formed from the digits 1, 2, 3, 4 and 5, if the digits can be repeated ?

How many numbers of four digits can be formed with the digits 1,2,3,4,5 if the digits can be repeated in the same number?

How many numbers of 3 digits can be formed with the digits 1,2,3,4,5 when digits may be repeated?