# Find all the co binary numbers in the given range.

Find the number of co-binary palindromes existing between m and n. A co-binary palindrome is a number in which both, the decimal number and its binary conversion are a palindrome.

Examples:

```Input: starting number : 300, last number: 315

Output : 313
```

Code: Python code to find all the co binary numbers in the given range

 `# Python code for co-binary palindromes ` ` `  `def` `convert_into_binary(number): ` `    ``return` `bin``(number).replace(``"0b"``,"") ` ` `  `def` `reverse_it(number): ` `    ``number ``=` `str``(number) ` `    ``return` `number[::``-``1``] ` ` `  `def` `is_palindrome(number): ` `    ``if` `number ``=``=` `int``(reverse_it(number)) : ` `        ``return` `True` `    ``else``: ` `        ``return` `False` ` `  `# starting number ` `m ``=` `300` ` `  `# ending number ` `n ``=` `1000` `bin_pals ``=` `[] ` ` `  `for` `i ``in` `range``(m,n``+``1``): ` `    ``if` `is_palindrome(i) ``=``=` `True` `and` `is_palindrome( ` `            ``int``(convert_into_binary(i))): ` `         `  `        ``bin_pals.append(i) ` `         `  `print``(bin_pals) `

Output :

```[313, 585, 717]
```

My Personal Notes arrow_drop_up Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.

Article Tags :

Be the First to upvote.

Please write to us at contribute@geeksforgeeks.org to report any issue with the above content.