The Language of Sets

Which of the following is a well-defined set?

• Set of beautiful actresses.

• Set of soccer teams in the Premier League.

• Set of honest politicians.

• Set of happy soccer players in Europe.

Which of the following is not a well-defined set?

• Set of soccer shoes brands.

• Set of players of FC Barcelona.

• Set of handsome soccer players.

• Set of the top scorers in the La Liga.

What set describes the following elements?

{4, 6, 8. 10, 12}

• Set of even numbers.

• Set of even numbers between 4 and 12.

• Set of even numbers from 4 up to 12.

• Set of even numbers less than 14.

Which of the following set of elements does not belong to "set of the factors of 18"?

• {2, 6, 9, 18}

• {1, 3, 6, 18}

• {2, 4, 6, 8}

• {3, 6, 9, 18}

Which of the following is the correct set-builder notation of the set below?

A = {2, 3, 4, 5, 6, 7}

• A = {x | x is a whole number below 8}

• A = { x | x are numbers from 2 up to 7}

• A = {x | x is a whole number between 2 and 7}

• A = {x | x is a counting number between 1 and 8}

Which of the following does not describe the set below?

B = {3, 5, 7, 9, 11}

• B = {x | x is an odd number from 3 up to 11}

• B = {odd numbers between 1 and 13}

• B = {x | x is an odd number less than 12}

• B = {odd numbers greater than 2 but less than 12}

Which of the following is the roster method of the set below?

C = {distinct letters of the word "COOL"}

• C = {C, O, O, L}

• C = {C, O, L}

What do you write at the end of the list of elements in a "roster method" if the set is infinite?

• etc

• and so on

• dash

• three dots

How do you call the three dots in a roster method of an infinite set?

• and so on

• ellipsis

• etchetera

• dot-dot-dot

Identify what type of set is the given set below?

{consonants of the English alphabet}

• Finite set

• Empty Set

• Infinite Set