Wiki User
∙ 9y ago7 two-digit numbers.
Wiki User
∙ 9y agoThe sum of all palindromic numbers from 1001 to 9999 is 495000.
The same as the number of two-digit numbers, since the last two digits must the same as the first two, only reversed. So I'll say there are 100 four-digit palindromes.
The same as the number of two-digit numbers, since the last two digits must the same as the first two, only reversed. So I'll say there are 100 four-digit palindromes.
With 123 digits you can make 123 one-digit numbers.
93 (and 39).
27
If the number with the digits reversed can have a leading 0 so that it is a 1-digit number, then 16. Otherwise 13.
The sum of all palindromic numbers from 1001 to 9999 is 495000.
47 Impossible problem!
Find a four digit number whose digits will be reversed when multiplied by nine?
The same as the number of two-digit numbers, since the last two digits must the same as the first two, only reversed. So I'll say there are 100 four-digit palindromes.
The same as the number of two-digit numbers, since the last two digits must the same as the first two, only reversed. So I'll say there are 100 four-digit palindromes.
The number you are looking for is 12. Reversing the digits gives you 21 75% of 12 is 9 12 + 9 = 21
With 123 digits you can make 123 one-digit numbers.
An eight digit number with one zero cannot remain the same when its digits are reversed. It must have an even number of 0s.
There are 5460 five digit numbers with a digit sum of 22.
93 (and 39).