Understanding Case Sensitivity in Variables: Help!

Tell us what’s happening:

Not sure what camelCase is as it relates to numbers.

Your code so far

// Declarations
var StUdLyCapVaR;
var properCamelCase;
var TitleCaseOver;

// Assignments
studlyCapVar = 10;
properCamelCase = "A String";
titleCaseOver = 9000;

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Link to the challenge:
https://www.freecodecamp.org/challenges/understanding-case-sensitivity-in-variables

Thanks again for your prompt reply.