Half of them. Every other number from 0 to 99998 is even.
Since there are 90,000 five digit numbers, that means that 45,000 of them are even.
25
100
Not sure what a "didget" is. It is possible to make 18 5-digit numbers.
There are 450 even three-digit integers, from 100 to 998. This excludes numbers with leading zeroes (000 to 099).
There are 4500 such numbers.
With a total of 90,000 five digit numbers, we can conclude that there is 45,000 EVEN five digit numbers.
There are five such numbers.
There are 252 of them.
90000
4,000 even numbers, 4,000 odd numbers.
There are 5460 five digit numbers with a digit sum of 22.
162
There are 180 3-digit numbers divisible by five.
There are 450 even three-digit integers, from 100 to 998. This excludes numbers with leading zeroes (000 to 099).
2240
Not sure what a "didget" is. It is possible to make 18 5-digit numbers.
There are 449999 such numbers.