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Maths-

General

Easy

Question

If n(A)=10, n(B)=20,c=5 in the given Veen diagram. Find a and b.

a=10 and b=15
a=5 and b=5
a=15 and b=10
a=15 and b=5

The correct answer is: a=5 and b=5

$n left parenthesis A right parenthesis equals 10 n left parenthesis B right parenthesis equals 20 c equals 5 F r o m space v e n n space d i a g r a m comma n left parenthesis A right parenthesis equals a plus c 10 equals a plus 5 a equals 10 minus 5 therefore a equals 5 n left parenthesis B right parenthesis equals b plus c 20 equals b plus 5 b equals 20 minus 5 therefore b equals 15$

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