2. A palindrome is a number or a word that is the same in the two directions: left to right and vice versa. Example of palindromes: da

Question

2. A palindrome is a number or a word that is the same in the two directions: left to right and vice
versa. Example of palindromes: dad, mom, noon, karak, 22, 121, 3443. How many palindrome
numbers can you make with 4 digits, with the possibility of repeating the digits? *
*8100
*8102
*8104
*8098

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bonexptip 4 years 2021-08-05T20:24:45+00:00 1 Answers 12 views 0

Answers ( )

  1. thugiang
    0
    2021-08-05T20:26:11+00:00
    Reply

    Answer:

    90 between 1000 and 9999

    Step-by-step explanation:

    The first digit cannot be 0. It can be nine other digits.

    The second digit can be anything between 0 and 9.

    To be palindromic the 2nd and 3rd digits must be the same.

    And in addition, the 1st and 4 numbers must be the same.

    So the answer is 9 * 10 = 90. That does seem too small, but try making a palindrome with the restrictions I have outlined. None of the examples you have given beginning with 8 are palindromic.

    8118 is palindromic

    8998 is also palindromic

    9009 is palindromic

    2002 is palindromic

    There are only 90 of them.

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