180 Answered Questions for the topic Sets

Sets

01/28/16

sets: words problem
Make up a real world example where ACBCU. define A, B, and U and draw an euler diagram.
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Sets

01/28/16

sets: words problem question
Make up a real world example where ACBCU. define A, B, and U and draw an euler diagram.
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Sets

01/28/16

Sets: words problem question.
Let U be the students in the class today. define a subset A of U based on some quality or characteristic. (something other than gender). clearly define A in words. You do not need to place people... more
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01/13/16

Find the cardinal number for the set given below.
{x|x is a continent whose name begins with the letter Y}   The cardinal number of the given set is what?
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Sets

12/11/15

In a survey of 30 families, the findings were that:
15 families owned dogs, 12 families owned cats x owned both dogs and cats  families owned neither cats nor dogs
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Sets

11/06/15

P(n,r)=r!C(n,r) troe or false
P(n,r)=r!C(n,r) is this true or false
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Sets

10/28/15

Why is this statement true?
This question is about sets:   {0} is not an element of {0}   Why is this statement true?
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10/13/15

Let A, B, and C be sets in a universal set U.
  We are given n(U)=73, n(A)=35, n(B)=43, n(C)=42, n(A intersect B)=18, n(A intersect C)=27, n(B intersect C)=27, n(A intersect B intersect C')=3.   Find (a) n((A u B u C)') and (b) n(A'... more
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Sets

10/06/15

Let U= (a, b, c, d, e, f, 1, 2, 3) and E= (a, b, 2, 3)
Let U= (a, b, c, d, e, f, 1, 2, 3) and E= (a, b, 2, 3) Find E' ( read as "E prime")
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Sets

10/06/15

Let D = { j, k, l, m, n, o, p }
Let D = { j, k, l, m, n, o, p } Find the number of proper subsets for D.
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Sets Algebra 2

10/06/15

Let A = {a, b, c, d} and C = {a, e} Find n(A X C)
Let A = {a, b, c, d} and  C = {a, e}  Find n(A X C)
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Sets

08/25/15

True or False
Let A={{x}},B={x,{x}},C={x,{x,{x,}}}1) {} subset B2) B proper subset C3) A element B4) x element A5) B element C6) A subset B   I really thought all were true however one said that numbers 2,3,4... more
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Sets

08/24/15

List the elements
Let X = {0,1,2} 1. C = {z:z = 2x and x element X} 2. C = {z:z = x + y where x element X and y element X} 3. C = {z:z element X and -z element X}
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Sets

08/24/15

All about sets
Why is that the elements/answer of set A is {1/3, -2} from the notation {x:(3x-1)(x+2)=0   Please explain    AND What is the cardinality of A = {}? Should we consider it even if it is not... more
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08/23/15

problem set
In a survey, 110 freshmen of San Pedro were asked on their preferred network SIM. The result was: 66 used Smart49 used Globe26 used Sun Cellular28 used Smart and Globe12 used Globe and Sun... more
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Sets

08/23/15

Elements and sets
A. List the elements of each of the following (roster method). Use '...' notation for infinite setsB = {x : x is an integer -3 < x < 4}B = {x : x is a positive integer and multiple of three}B... more
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Sets

08/23/15

Is {} an element or a subset or not an element nor subset of irrational numbers?
Please justify.
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08/23/15

How many of..?
Frenchy Fries has added two new ways to enjoy their best-selling Jolly Crispy Fries. The choices now would be Sour Cream Fries, Cheezy Fries, and Classic Fries. A month after its launch, a survey... more
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08/23/15

Listing elements or cardinality
A. List the elements of each of the following (roster method). Use '...' notation for infinite sets Let X = {0,1,2} B = {z : z = 2x and x element X} B = {z : z = x + y where x element X and y... more
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Sets Math Find

08/23/15

Find the following
Let U be the set of counting numbers between 11 and 20, inclusive.  A = {x element U : x is divisible by 2} B = {11,12,13,14,15} C = {x element U : x is odd}   Find (i) [(B intersect A) \ C] x... more
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08/23/15

Write T if the statement is true; write F otherwise
Let A = {{x}}, B = {x,{x}}, C = {x,{x,{x}}}.   i. {} subset B ii. B proper subset C iii. A element B iv. x element A v. B element C vi. A subset B   I just want to compare my answers.... more
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Sets

08/22/15

What is the cardinality if A = { {}, {{}, {}}}?
I am still confused about null sets. I'm pretty sure that {} is equivalent to 0 with a / on it. Please help me. I don't want to fail math. :(
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Sets

08/22/15

What is the power set of the power set of a null set?
Hello, I just want to know what is the power set of it. I'm quite confused esp. with null sets. I don't know if they are an element or a set. Please answer. I would really really appreciate it.
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Sets

08/21/15

If f(x +y)= f(x) + f(y) + 2xy. find f(8).
  x,y∈N and f(1)=4
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Sets

07/03/15

sets topics
in a far city 90% of the population own a cycle. 15% own a car and everybody owns a cycle  or car or both. what % of the population own a car but not a cycle   (a)10% (b)20% (c)30% (d)40%
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