G78.M4.S4.Q3

1. If A = {4, 8, 12, 16, 20}

B = {2, 4, 6, 8, 10, 12, 14, 16, 18, 20} and

C = {a, b, c, d, e}

Then, is n(A) = n(C) ?

• YES

• NO

1. State whether the given set is finite, infinite or null.

A = {2, 4, 6, 8, …….., 800}

• Finite

• Infinite

• Null

1. State whether the given set is finite, infinite or null.

B =  {No. of electrical appliances working in your house}

• Finite

• Infinite

• Null

1. State whether the given set is finite, infinite or null.

C = { No. of patients in a hospital}

• Finite

• Infinite

• Null

1. State whether the given set is finite, infinite or null.

D = { No. of stars  in Milky Way galaxy}

• Finite

• Infinite

• Null

1. Find whether the sets P and Q are overlapping sets or disjoint sets:
   P = {x : x is a factor of 24}

2. Q = {x : x is a factor of 33}

• Overlapping

• Disjoint

1. Find whether the sets P and Q are overlapping sets or disjoint sets:
   P = {x : x is a multiple of 7 between 1 and 50}

Q = {x : x is a multiple of 11 between 1 and 50}

• Overlapping

• Disjoint

1. What is the  cardinality of set A = {x: x ϵ integers, -7< x < 7}

• n(A) = 11

• n(A) = 12

• n(A) = 13

• n(A) = 14

1. State whether the following is true or false.

1. 1. If B = { 0 }, then n(B) = 0

2. 2. Null set is represented as { 0 }

3. 3. {x, y, z} = {last three letters of English alphabet}

• 1. 1. True

  2. 2. True

  1. 3. True

• 1. 1. False

  2. 2. False

  1. 3. False

• 1. 1. True

  2. 2. True

  1. 3. False

• 1. 1. False

  2. 2. False

  1. 3. True

1. State, which of the given pairs of sets are disjoint.

• { birds } and { trees }

• { fan of cricket } and { fan of foot

• { people living in Kolkata } and { people living in West Bengal }

• All of the above