References

References

·       Math Goodies.  https://www.mathgoodies.com/lessons/sets/subsets

·       Math only math. https://www.math-only-math.com/union-of-sets-using-venn-diagram.html

·       Math only math. https://www.math-only-math.com/intersection-of-sets-using-Venn-diagram.html

·       Centre for innovation mathematics teaching. https://www.cimt.org.uk/projects/mepres/book7/bk7i1/bk7_1i3.htm

·       Math and stats help.   https://youtu.be/rNjmchXjr2c

·       Toolsie, R. (1996).  A complete course with CXC questions.  Mathematics, Vol, 1.  Page 2-7

·       AskIITitans.  https://www.askiitians.com/iit-jee-algebra/set-relations-functions/set-theory/complement-of-a-set/