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There are 900 of them. That is too long a list for me, but you can generate it yourself:
The first digit can take any value from the set {1, 2, 3, 4, 5, 6, 7, 8, 9}.
For each possible value of the first digit, the second digit can take any value from the set {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}.
For each possible combination of the first two digits, the third digit can take any value from the set {0, 1, 2, 3, 4, 5, 6, 7, 8, 9}.
Then the fourth digit is the same as the second digit and the fifth digit is the same as the first digit.
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∙ 8y ago
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How many 5 digit palindromes are there?
900 This explains it. A positive integer is a palindrome if it reads the same forward and backwards such as 1287821 and 4554. Determine the number of 5-digit positive integers which are NOT palindromes. We start by counting the total number of 5 digit positive integers. The first digit is between 1 and 9, so we have 9 choices. Each of the other 4 digits can be anything at all (10 choices for each). This gives us 9(10)4 = 90000 five-digit positive integers. Now we need to count the number of 5 digit palindromes. Again, we have 9 choices for the first digit and 10 choices for each of the next two. The tens and units digits however are fixed by our choices so far. Therefore, there are only 900 five-digit palindromes. Therefore, the total number of five-digit positive integers which are not palindromes is 90000-900 = 89100.
How many palindromes have 6 digits?
There are 900 6-digit palindromes.
How many 5 digit palindromes equal the sum of 18?
35.
How many palindromes are there between 900 - 1900?
-1000
How many ten digit palindromes are there?
90000. With 10 digit palindromes, the last 5 digits are the same as the first 5 digits in reverse, eg 12345 54321. So it comes down to how many 5 digit numbers are there? They are the numbers "10000" to "99999", a total of 99999 - 10000 + 1 = 90000.
How many 3-digit odd palindromes are divisible by 5?
There are 10 3-digit odd palindromes that are divisible by five.
What are all the four and five digit numbers that have a digit sum of 6 and are palindromes?
1221, 2112, 3003, 10401, 11211, 12021
How many 3 digit palindromes are there that add up to ten?
Five of them.
How many 4-digit palindromes are there?
There are 90 four-digit palindromes
How many four digit palindromes are there?
There is 90 four digit palindromes.
How many four digit palindromes are perfect squares?
There are no four-digit perfect squares that are palindromes.
How many digits palindromes are there?
There are 90 four-digit palindromes
How many 5 digit palindromes are there?
900 This explains it. A positive integer is a palindrome if it reads the same forward and backwards such as 1287821 and 4554. Determine the number of 5-digit positive integers which are NOT palindromes. We start by counting the total number of 5 digit positive integers. The first digit is between 1 and 9, so we have 9 choices. Each of the other 4 digits can be anything at all (10 choices for each). This gives us 9(10)4 = 90000 five-digit positive integers. Now we need to count the number of 5 digit palindromes. Again, we have 9 choices for the first digit and 10 choices for each of the next two. The tens and units digits however are fixed by our choices so far. Therefore, there are only 900 five-digit palindromes. Therefore, the total number of five-digit positive integers which are not palindromes is 90000-900 = 89100.
How many palindromes have 6 digits?
There are 900 6-digit palindromes.
How many different palindromes are there with 6 digits?
For there to be palindromes, each digit must be replicated. Therefore there are at most three distinct digits.If there are 3 pairs of different digits, then there are 6 palindromes. If there can be more duplicate digits, then there are 27 palindromes.
How many 3 digit numbers are palindromes?
90
How many positive 3-digit palindromes are there?
90 of them.
