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Number of elements formula – For 2 sets

Last updated at May 29, 2018 by

For two sets A & B

n(A) = Number of elements of set A

n(B) = Number of elements of set B

 

n(A ∪ B) = n(A) + n(B) – n(A ∩ B)

 

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.