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3 November, 22:10

Given the following HTML form snippet of markup, which of the following user inputs would meet the regular expression rule written in the pattern attribute?

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  1. 3 November, 23:42
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    Given the regular expression as follows:

    [A-Za-z19]{5}

    The acceptable input is a code with five characters and each character can consist of uppercase lowercase of alphabet from A-Z or a-z and digit 1 and digit 9. The examples of input that meet the regular expression rule are as follows:

    abx11

    Acd19

    CAD19

    Explanation:

    The characters specified within the square bracket in regular expression are the character sets that meet the rule. A-Z and a-z means all the uppercase and lowercase English alphabet are acceptable. 19 means digit 1 and 9 are part of acceptable character sets. The 5 enclosed by the curly bracket, {5}, means it must have exact five occurrences of characters.
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