QUIZ 1 (Sets)

1.       Consider M = vowels in the word MATHEMATICS. Find n(A).

• 1

• 2

• 3

• 4

The following shows an empty set EXCEPT

• The set of months with 32 day

• The set of dogs with six legs

• The set of cars with 20 doors

• The set of vowels in the English alphabet

Which of the following is a well-defined set?

• A collection of heartbreaking Korean dramas.

• group of good schools

• A set of beautiful places

• A set of Personal Protective Equipment for infection control.

Which of the following is an example of a finite set? 

• The set of flowers in the garden

• The set of stars in the sky

• The set of boys in my school.

• set of birds in the world.

What is the cardinality of set A, which contains all counting numbers less than 10?

• 8

• 9

• 10

• 0

If A = {1, 3, 5, 7, 9} and B = {2, 3, 5, 7}, what is A ∩ B?

• A ∩ B = {2, 3, 5, 7}

• A ∩ B ={3, 5, 7}

• A ∩ B = {2, 3, 5, 7, 9}

• A ∩ B = {1, 2, 3, 5, 7, 9}

How can you describe the set {1, 2, 3, 4, ...}

                                

• Set of whole numbers.

• Set of even numbers

• Set of counting numbers

• Set of odd numbers .

If A = {𝑥 𝑖𝑠 𝑎𝑛 odd 𝑛𝑢𝑚𝑏𝑒𝑟 𝑙𝑒𝑠𝑠 𝑡ℎ𝑎𝑛 10} then A is ___.

• {2,3,5,7} 

• {2,4, 6, 8}

• {1,2,3,5,7}                            

• {1,3,5,7,9}

Given: J = { p, a, n, d, e, m, i, c}

K = { c, a, m, e }

L = { }

Find: J ∪ K

• J ∪ K = { p, a, n, d, e, m, i, c }

• J ∪ K = { c, a, m, e}

• J ∪ K = { p, n, d, i }

• J ∪ K = { }

Given the sets A = {2, 4, 6, 8} and B = {3, 4, 5, 6, 7}. What is  A- B?

• {2, 3, 4, 5, 6, 7, 8}

• {2, 8}

• {4, 6}

• {3, 5, 7}