1, 2, 4, 5, 8, and 10, so only 6 digits.
333 integers.
899
90 palindromes.
952 of them.
666 integers.
9000 integers.
There are 2828 integers between 1000 and 9999.
There are 30 such integers.
333 integers.
899
31.how do you solve?
128!
90 palindromes.
There are 128 integers between 100 and 1000 that are divisible by seven.
500 of them.
How many
If you mean "between" 100 and 1000 to mean excluding 100 and 1000 then 449. If you want to include 100 and 1000 then 451.