If n(A)= 85 , n(B)= 96 and n(AuB)= 126,
find n(AnB).
Solution
n(AuB) = n(A) + n(B) - n(AnB)
126 = 85 + 96 - n(AnB)
126 = 181 - n(AnB)
126 - 181 = - n(AnB)
-55 = -n(AnB)
n(AnB) = 55 [after dividing by -1 both
sides]
Hence n(AnB) = 55 answer
TRY THIS………….
If n(A)= 93 , n(B)= 95 and n(AuB)= 124,
find n(AnB).
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