As reported in the Birmingham Mail, the envelope challenge is based on a formula created by a German mathematician. Carl Friedrich Gauss, who was en vogue in the 18th century, is credited with creating it. Now many social media users are taking up the idea, praising it as a 'fun' way to save. Across those 25 weeks, draw two envelopes twice a week - four per week - at complete random. It would be a fun way for us to save up for something special."

Source: Daily Mirror June 13, 2021 05:01 UTC