If M is any set, then write and

Represent the union of two sets by Venn diagram for each of the following.

is a prime number between 80 and 100}

is an odd number between 90 and 100}

Write the subset relations between the following sets.

X = set of all quadrilaterals.

Y = set of all rhombuses.

S = set of all squares.

T = set of all parallelograms.

V = set of all rectangles.

Observe the Venn diagram and write the given sets U,A,B,A ∪ B and A ∩ B.

If n(A) = 7, n(B) = 13, n (A ∩ B) =4 then n (A ∪ B) = ?