The first digit can by selectd in one of two ways, since a number starting with zero would not be a 5-digit number. After that, each of the other four digits can be selected in 3 ways. So the number of 5-digit numbers is
2*34 = 162
162
59
There are no three didgit numbers but there are 63 three digit numbers.
It would help to know which digit. 0 appears in 9 numbers and each of the others in 18 numbers.
100,000
9
162
59
There are no three didgit numbers but there are 63 three digit numbers.
999
It would help to know which digit. 0 appears in 9 numbers and each of the others in 18 numbers.
100,000
There are 9 of them.
There are no 3 digit numbers between 0 and 9 because 0 and 9 are 1 digit numbers.
99.Because if you do 0 minus 99 whats the answer?99.So it has 99 numbers in a 2-digit number.
All of them. There are roughly 45,000 5-digit odd numbers. None of them end in 0.
81