added number 3 to things I dont know#17

mp299 merged 1 commit intomainmp299/project-management-github-activity:mainfrom

6-i-dont-understand-the-actual-application-of-the-code-we-are-doingmp299/project-management-github-activity:6-i-dont-understand-the-actual-application-of-the-code-we-are-doingCopy head branch name to clipboard