Q. Which day is celebrated as International Day of Mathematics (IDM) every year?
Answer:
14 March
Notes: The International Day of Mathematics (IDM), also known as Pi Day, is celebrated annually on March 14th to honor the mathematical constant Pi (approx. 3.14). Originating in 1988 by physicist Larry Shaw, it gained official recognition in 2009 by the US House of Representatives and UNESCO in 2019. This day acknowledges the importance of mathematics globally.