111, 121, 212, 222
There are two possible digits for the first and last digit, and two possible digits for the centre digit, making 2 × 2 = 4 possible 3 digit palindromes from the set {1, 2}, namely the set {111, 121, 212, 222}.
111, 121, 222, 212
111, 121, 131, 222, 212, 232, 333, 313, 323
111, 121, 222, 212
9,999,876 is the greatest seven-digit number using four different digits.
There are two possible digits for the first and last digit, and two possible digits for the centre digit, making 2 × 2 = 4 possible 3 digit palindromes from the set {1, 2}, namely the set {111, 121, 212, 222}.
111, 121, 222, 212
111, 121, 131, 222, 212, 232, 333, 313, 323
111, 121, 222, 212
9,999,876 is the greatest seven-digit number using four different digits.
676 of them.
The another word for theatrical drama using palindromes is "Sagas"
There are 10 digits, but for a three digit number the first number cannot be a 0. Thus: there is a choice of 9 digits for the first (and last digit which must be the same), with 10 choices of digit for the second (middle) digit, making 9 × 10 = 90 such palindromic numbers.
The greatest 9-digit number using three different digits is 999888777, formed by using the digits 9, 8, and 7 in descending order. The smallest 9-digit number using three different digits is 100000000, created with the digits 1, 0, and 0. This arrangement ensures that the number starts with 1, followed by the zeros to maintain the smallest value.
If the digits are all different then 18. Otherwise, 192.
89,999 different numbers i guess
98765.