Answer for Calculating Age From Birth Date :
Formula Code:
First simply if the month of present year is greater than date of birth than age will be calculated as the difference between present year and year of birth.

Secondly if the first scenario fails two options comes in my mind, if the month of present year is same then is day of birth is same or not so if day of birth is greater than or equals to day of birth than age is calculated as we have done in the first scenario.

Thirdly if above both scenarios fails that means month of present year and month of birth date is same but day of birth is smaller than day of present day. So age is calculated as the difference between present year and year of birth -1

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I am Sakthivel Madesh, a certified Salesforce Advanced Developer & Administrator working on Salesforce Technology since 2011. I am currently working in Techforce Services as Sr. Salesforce Developer. I have worked on multiple technologies Like PHP, Java, Salesforce, I am very passionate about Salesforce and to earn 15x Salesforce Certification. I love Trailhead for learning Salesforce Skill and Become a Trailhead 5x Ranger too. I Love to Learn & Share my Salesforce knowledge to Salesforce Learners/Beginner using My Blog and Salesforce Community.

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