Assessment No.1 (Sets and Set Operations)

A well-defined set is a group, list, or collection of easily identified objects that shared a common characteristic. Which of the following is NOT a well-defined set?

• group of Grade 7 female students

• color in the Philippine flag

• distinct letter in the word Philippines

• good senators in the Philippines

Which of the following symbol is a null set or empty set?

• ∈

• ∩

• ∅

• ⊂

The following is a subset of A = { 2, 4, 6, 8, 10 }, except

• X= {2 , 4}

• Y= {6,8,10}

• Z= {2,4,6,8}

• W={9}

Let P be the set of letters of the word “MATH”. Find the n(P).

• 4

• 2

• 5

• 3

It is a set operation where the resulting set is obtained by getting the common elements found in both sets.

• Intersection of Sets

• Complement of a Set

• Set Difference

• Union of Set

Which statement describes a well-defined set?

• collection of honest members in the family

• collection of tasty fruits

• collection of colors in the rainbow

• collection of easy problems in Math textbooks

Power Set formula is denoted by the symbol 2ⁿ where n is the number of elements. If a set contains 4 elements, how many subsets are formed?

• 18

• 16

• 12

• 8

Consider F = { 1, 2, 3, 4} Which symbols completes the statement correctly? 2 _____ F

• ∅

• ∈

• ∩

• ∪

Which of the following sets is described using set-builder notation?

• {x|x is a prime factor of 30}

• {set of vowels}

• {#,b,16,$}

• {1,2,3,5}

Let X and Y be the following sets: X={1,3,5,7} and Y={2,4,6}. Find X∪Y.

• {1,2,3,4,5,6}

• ∅

• {2,3,4,6}

• {1,2,3,4,5,6,7}