End of Term Test

In set builder notation, what does the expression {x: x > 0, x ϵ Z } represent?

• The set of all positive integers

• The set of all odd numbers greater than 0

• The set of all even numbers greater than 0

• The set of all prime numbers greater than 0

Which of the following represents the set of all multiples of 3 less than 20 using set builder notation?

• {x: x is a multiple of 3, x < 20}

• {x: x is a multiple of 3, x > 20}

• {x: x is a multiple of 3, x ≤ 20}

• {x: x is a multiple of 3, x > 0}

Which of the following represents the square of a negative number?

• always negative

• always positive

• always zero

• depends on the number

If set A = {a, b, c}, how many possible subsets can be obtained from set A?

• 3

• 6

• 8

• 10

If set A = {1, 2, 3} and set B = {3, 4, 5}, what is 𝐴∩𝐵?

•   {1, 2, 3, 4, 5}    

• {3}

• {1, 2}

• {4, 5}

Which of the following statement is TRUE about intersection of sets?

• The set of all elements common to both sets 

• The set of all elements in either set

• The set of all elements in only one set

• The set of all elements in both sets combined.

If set A = {1, 2, 3} and set B = {3, 4, 5}, what is 𝐴∪𝐵?

•   {1, 2, 3, 4, 5} 

• {3} 

• {1, 2} 

• {4, 5}

In a Venn diagram representing sets A and B, what does the region outside both circles represent?

• Elements common to both A and B

• Elements in set A but not in set B

• Elements in set B but not in set A 

• Elements not in set A or set B

A square has an area of 144 cm². What is the length of its side?

• 6

• 8

• 12

• 24

• 5

• - 5

• 25

• -25