If a = {3, 5, 7, 9, 11} and B = {4, 7, 10}, Find: (A – B) and N(A – B)

If A = {3, 5, 7, 9, 11} and B = {4, 7, 10}, find: (A – B) and n(A – B)

One Line Answer

(A – B) and n(A – B)

⇒ (A – B) = (2, 4, 8)

⇒ n(A - B) = 3

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Universal Set

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Chapter 13 Set Concepts (Some Simple Divisions by Vedic Method)
Exercise 13 (D) | Q 3.2

Which set of numbers could be the universal set for the set given below?

Given the universal set = {-7,-3, -1, 0, 5, 6, 8, 9}, find: A = {x : x < 2}

Given, universal set = {x : ∈ N, 10 ≤ x ≤ 35}.
B = {x : x > 29} Find: B'.

For the universal set {4, 5, 6, 7, 8, 9, 10, 11,12,13} ; find the subset of D = {even numbers less than 10}.
Also, find a complement of D.

If A = {4, 5, 6, 7, 8} and B = {6, 8, 10, 12}, find: A∩B

If A = {3, 5, 7, 9, 11} and B = {4, 7, 10}, find: n(B)

If A = {3, 5, 7, 9, 11} and B = {4, 7, 10}, find: A ∩ B and n(A ∩ B)

If A = {3, 5, 7, 9, 11} and B = {4, 7, 10}, find: n (B)

If P = {x : x is a factor of 12} and Q = {x: x is a factor of 16}, find : n(P)

If P = {x : x is a factor of 12} and Q = {x: x is a factor of 16}, find : Q – P and n(Q – P).