Mathematics 7 - 2nd Quarter Exam

Which of the following sets is well-defined?

• The set of good books

• The set of delicious fruits

• The set of tall mountains

• The set of all odd numbers less than 10

What is an empty set?

• A set with no elements

• A set with exactly one element

• A set containing only the number zero

• A set with an infinite number of elements

Which refers to the collection of well-defined objects?

• Numbers

• Sets

• Elements

• Form

Which is the correct roster notation for the set of vowels in the English alphabet?

• {vowels}

• {A, E, I, O, U}

• {x | x is a vowel}

• (A, E, I, O, U)

Which of the following sets is expressed in verbal description method?

• (1, 3, 5, 7, 9)

• {1, 2, 3, 4, 5}

• {x | x is an even number}

• The set of all prime numbers less than 10

Which method represents the roster or listing method?

• Listing elements in a sentence format

• Listing all elements of the set explicitly

• Describing elements using mathematical notation

• Stating conditions for an element to belong to the set

Which of the following represents the set of natural numbers less than 4 in roster form?

• {x | x is a natural number less than 4}

• {1, 2, 3, 4}

• {x | x < 4}

• {1, 2, 3}

Which method is used in the following: "The set of all multiples of 5"?

• Set builder method

• Roster method

• Verbal description method

• Empty set

Which of the following is an example of the set-builder or rule method?

• {a, e, i, o, u}

• The set of even numbers

• (0, 2, 4, 6, 8)

• {x | x is a natural number less than 5}

How is the set of integers between -2 and 3 written in roster form?

• {-2, 0, 2}

• {0, 1, 2, 3}

• {-2, -1, 0, 1, 2}

• {-2, -1, 0, 1, 2, 3}