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CBSE Class 8 Answered

if n[a]=5,n[b]=7,n[a intertsect b]=3 then n[a union b]=
Asked by Ramesh | 28 Oct, 2018, 06:56: PM
answered-by-expert Expert Answer
begin mathsize 16px style straight n left parenthesis straight A right parenthesis equals 5 comma space straight n left parenthesis straight B right parenthesis equals 7 comma space straight n left parenthesis straight A intersection straight B right parenthesis equals 3
straight n left parenthesis straight A union straight B right parenthesis equals straight n left parenthesis straight A right parenthesis plus straight n left parenthesis straight B right parenthesis minus straight n left parenthesis straight A intersection straight B right parenthesis
straight n left parenthesis straight A union straight B right parenthesis equals 5 plus 7 minus 3 equals 9 end style
Answered by Sneha shidid | 28 Oct, 2018, 08:39: PM
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