Question

11) how many positive integer numbers not more than 4300 can be formed with the digits 0, 1, 2, 3, 4 if repetitions are allowed

Answer 1

Answer:

5*4*5*5

=500 numbers

thousands place can be occupied  by all the numbers=5

hundreds place can be occupied by only 4 numbers =4

tens place can be occupied  by all the numbers=5

ones place can be occupied  by all the numbers=5