Environment:

• jQuery 1.11.0
• jQuery Validation 1.13.0
• Windows 7
• Internet Explorer 10

Minimum test case: http://jsfiddle.net/cvp41zk4/

In IE 10 I've found that a required number field will continue to display "This field is required." instead of "Please enter a valid number." if alpha characters are inserted instead of numeric characters. If I add numbers that exceed min/max rules then the required field error is replaced by the min/max error.

In the minimum test case follow these steps to reproduce:

1. Click submit to trigger validation
2. Type "aaa" in the field, notice that the message does not ask you to enter a number, but rather complains that it is required.

I've only observed this behavior in IE10. It seems to work as desired in other browsers including IE8 and IE9.