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somenath.saha1... , asked a question
Subject: Math , asked on 4/11/10

 Explain n(AuB) =n(A) +n(B)-n(A intersection B)?

EXPERT ANSWER

Sunanta Achoibam , Meritnation Expert added an answer, on 12/11/10

Dear Student

The relation given you can be explained as,
Using this relation, you can solve various problems.
 

Cheers!

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Srijan Gupta From Swami Vivekanand Public School, added an answer, on 8/11/10
2 helpful votes in Math

n(AuB) =n(A)+n(B) minus n(A intersection B)

suppose,A={1,2,3,4}  B={4,5,6,7}

thus,(AuB)={1,2,3,4,5,6,7}   and (A intersection B)={4}

n(A)=4  n(B)=4  n(AuB)=7  n(A intersection  B)=1

therefore,7=4+4-1=7

hence proved that,n(AuB)=n(A)+n(B)-n(A intersection B) 

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Mihir Bagchi From Modern Academy, added an answer, on 23/8/11
1 helpful votes in Math

EXACTLY WHAT MERIT NATION EXPERT SAID

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