Should I ask my coworker out? thoughts?

This is my last week at my job. I have a crush on a female who is my coworker she’s 3 years older than me 27. Very beautiful and great personality. She knows my age 24 since she asked about my age before and her response was you’re very mature. I’ve never really tried asking her out in the past because I wanted to stay professional and not have it cause an issue. Should I ask her out or ask for her number? Or just let it be?
Should I ask my coworker out? thoughts?
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