Challenge Exercises on Sets

Directions: Read each question below. You may draw a Venn diagram to help you find the answer. Select your answer by clicking on its button. Feedback to your answer is provided in the RESULTS BOX. If you make a mistake, rethink your answer, then choose a different button.

1.	What is wrong with the set listed below? D = {m, a, t, h, e, m, a, t, i, c, s}
	It is not written with roster notation. A capital letter is used to represent this set. The objects in this set are not unique. None of the above. RESULTS BOX:

2.	Which of the following statements is true about the set listed below? C = {prime numbers less than 20}
	9 C ^-2 C C is an infinite set. All of the above. RESULTS BOX:

3.	Which of the following is a finite set?
	{ x : x ≥ 2 and x ≤ 6 } A = {0, 1, 2, 3, ...} B = {^-3,^-2, ^-1, 0, 1, 2, 3, 4, 5, ...} RESULTS BOX:

4.	Which of the following sets is equal to the set given below? { n \| ^-3 ≤ n < 7 }
	D = {..., ^-3, ^-2, ^-1, 0, 1, 2, 3, 4, 5, 6, ...} E = {^-2, ^-1, 0, 1, 2, 3, 4, 5, 6, 7} F = {^-3, ^-2, ^-1, 0, 1, 2, 3, 4, 5, 6} All of the above. RESULTS BOX:

5.	How many subsets of M are there? M = {a, e, i, o, u}
	5 16 32 None of the above. RESULTS BOX:

6.	If = {whole numbers less than 20} and P = {prime numbers less than 20}, then which of the following sets overlaps with P,and is also a part of ?
	Q = {even numbers less than 20} R = {multiples of 4} S = {factors of 36} All of the above. RESULTS BOX:

7.	Which of the following accurately explains the meaning of the set listed below? { y : y ≤ ^-3 }
	The set of all y in such that y is any number greater than or equal to ^-3. The set of all y in such that y is any number less than or equal to ^-3. The set of all y in such that y is any number less than ^-3. None of the above. RESULTS BOX: