1.

If n(A)=10, n(B)=20, c=5 in the given Venn diagram. Find a and b.(a) a=10 and b=15(b) a=5 and b=15(c) a=15 and b=10(d) a=15 and b=5This question was addressed to me in exam.Question is taken from Venn Diagrams in division Sets of Mathematics – Class 11

Answer»

Correct option is (b) a=5 and b=15

The EXPLANATION: From the GIVEN diagram, a + C = 10 => a+5=10 => a=5

and b + c = 20 => b+5=20 => b=15



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