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Set Theory
Page 6
Questions (693)
Prove: let alpha be a lower bound of a subset E of an ordered set S. If alpha exist in E, then alpha= infE(greatest lower bound
1 answer
asked by
Ashley
382 views
Let A = {1,2,3,4}. Prove the statements (a) and (b). You must describe the relations
on A as a subset of AxA and also draw their
1 answer
asked by
Dosar
427 views
Let R be the statement : for all sets A, B and C, if A⊆B∪C and B ⊆C∪A then AΔB = C.
Q: Is R true for all sets A, B and
1 answer
asked by
Anonymous
448 views
Compute the indicated quantity
P(A probability B) = .1, P(B) = .5. Find P(A interception B).
2 answers
asked by
rosie
458 views
This is my last question, I promise!
Use U={1,2,3,4,5,6,7,8,9,10} A={2,3,5} B={5,6,7,9} C={1,4,10} to find the set AUB You guys
1 answer
asked by
Cassandra
445 views
1. for any sets X and Y, we define the symmetric difference X ∆Y by:
X∆Y = (X - Y) ∪ (Y - X) = (X ∪ Y) - (X ∩ Y) Prove
1 answer
asked by
Mary
484 views
1. for any sets X and Y, we define the symmetric difference X ∆Y by:
X∆Y = (X - Y) ∪ (Y - X) = (X ∪ Y) - (X ∩ Y) Prove
2 answers
asked by
Mary
554 views
1. for any sets X and Y, we define the symmetric difference X ∆Y by:
X∆Y = (X - Y) ∪ (Y - X) = (X ∪ Y) - (X ∩ Y) Prove
1 answer
asked by
Mary
635 views
1. for any sets X and Y, we define the symmetric difference X ∆Y by:
X∆Y = (X - Y) ∪ (Y - X) = (X ∪ Y) - (X ∩ Y) Prove
1 answer
asked by
Mary
545 views
1. for any sets X and Y, we define the symmetric difference X ∆Y by:
X∆Y = (X - Y) ∪ (Y - X) = (X ∪ Y) - (X ∩ Y) Prove
1 answer
asked by
Mary
479 views
The number of proper subsets of set A are?
When A= {1,3,5,7}
2 answers
asked by
Boo
489 views
1. for any sets X and Y, we define the symmetric difference X ∆Y by:
X∆Y = (X - Y) ∪ (Y - X) = (X ∪ Y) - (X ∩ Y) Prove
1 answer
asked by
Mary
516 views
1. for any sets X and Y, we define the symmetric difference X ∆Y by:
X∆Y = (X - Y) ∪ (Y - X) = (X ∪ Y) - (X ∩ Y) Prove
1 answer
asked by
Mary
501 views
Please!!
I know I posted this already but there is a typo. There are 49 mice in a pet shop. 30 mice are white. 27 mice are male.
2 answers
asked by
Anonymous
550 views
Find C intersection D.
C: {3, 6, 9, 12, 15, 18} D: {numbers divisible by 2 from 1 to 20} {2, 4, 6, 8, 10, 12, 14, 16, 18, 20} {6,
1 answer
asked by
ty
383 views
Explain why the union of two countably infinite sets with nothing in common is also countably infinite.
I said that it was
1 answer
asked by
Jessica
378 views
Let B =\ x|x is an even whole number less than 9) and C = \{3, 5, 6, 7\} Find the intersection BNC. Choose the correct answer
3 answers
asked by
Mira Free
34 views
also i don't understand this problem. i need help and to prove....the symbol ⊂ is subset.
here the problem: Prove that There
1 answer
asked by
Vylette
384 views
Let U = {7, 8, 9, 10, 11, 12, 13}, A = {7, 8, 9, 10}, B = {7, 8, 11, 12}, and C = {9, 11, 13}. List all the members of the given
3 answers
asked by
Anonymous
275 views
What is the cardinality of this set?
{p, {p}, {p, {p}}} my answer is 1. is it right?
1 answer
asked by
Don
334 views
Determine whether the pair of sets is equal.
{1, 1, 2, 2, 2, 6, 6, 6, 6}, {1, 2, 6}
3 answers
asked by
Anonymous
731 views
Prove that for every set S, Ø \subseteq( S.
i need to Use vacuous proof. i know that vacuous proof is when the hypothesis is
2 answers
asked by
Anonymous
1,106 views
Suppose U = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10} is the universal set and Q = {3, 6, 9}. What is Q'? (1 point) Responses {3, 6, 9}
3 answers
asked by
trippie
39 views
Suppose U = {1, 2, 3, 4, 5, 6, 7, 8}, A = (1, 3, 5, 7}, and B = {4, 5, 6}. Tell whether each statement is true or false. A B (1
3 answers
asked by
trippie
53 views
A _________ is the total collection of individuals or objects.
3 answers
asked by
Anna
322 views
A subset S of {1,2,…,n} is said to be packed if whenever i,j∈S the number ⌊(i+j)/2⌋ is also in S. Determine how many
5 answers
asked by
lin
440 views
Help me understand: {5} is a subset {0,2,5}
The way I read it is the only element in {5} is 5 and it is a member of the set
1 answer
asked by
ray
343 views
Let S={1,2,3,…11} and T1,T2…,TN be distinct subsets of S such that |Ti∩Tj|≤2 for all values i≠j. What is the maximum
1 answer
asked by
Help please
374 views
Let S={1,2,3,…11} and T1,T2…,TN be distinct subsets of S such that |Ti∩Tj|≤2 for all values i≠j.
What is the maximum
3 answers
asked by
Help please
435 views
Let Pn be the set of all subsets of the set [n]={1,2,…,n}. If two elements of P5 are chosen at random, the expected number of
1 answer
asked by
Mathslover
430 views
Let A be a subset of T={1,2,…,100} subject to the condition that if 2 distinct elements a and b are in A, then a+b is not in
1 answer
asked by
roronoa zoro
359 views
Let A be a subset of T={1,2,…,100} subject to the condition that if 2 distinct elements a and b are in A, then a+b is not in
1 answer
asked by
bravo
440 views
SETS
Let S1, ... , Sn be sets satisfying the following condition: Sj ¡ö Sj+1 for all 1 ¡ i ¡ n - 1. Find S1 ¡û S2 ¡û¡¦
1 answer
asked by
Carol
345 views
Given: B={1},find no. of elements of P[P{P(B)}].
1 answer
asked by
anoynomous
263 views
Can someone please help me with this I am not getting the same answers as the examples in the book.
U={1,2,3,4,5,6,7,8}
5 answers
asked by
Carol
989 views
For sets A, B, C is a subset of U, prove or disprove (with a counter-example) the following: If A is a subset of B, B is not a
2 answers
asked by
Ron
511 views
In a marketing survey involving 1,000 randomly chosen people, it is found that 630 use brand P, 420 use brand Q, and 210 use
7 answers
asked by
Mr.Brain
1,282 views
now i understand both intersection and union but not with an infinity. how do i figure this out
(-infinity,4)n(0,infinity)
1 answer
asked by
Marie
671 views
Could someone please explain the union to me. I don't understand. I get the intersection ones but not union. HElp me?
Ecample:
1 answer
asked by
Marie
366 views
If U=( 1,2,3,4,5,6,7,8,9,10) A=(1,2,4,5) B=(2,4,6,8) C=(2,3,5,7,9) find i) AuB ii) AnBnC iii) BnC iv)A' v)B' vi) A'nB' vii)
3 answers
asked by
Nathaniel Benson
43 views
Find the complement of set of U=(1,2,,3,4,5,6,7,8,9,10,11,12) A=(1,2,9) B=(1,6,8,10) C= (1,5,7,9)
3 answers
asked by
Nathaniel Benson
31 views
U=(1,2,3,4,5,6,7,8,9,10)
A=(2,3,4,5,9) B=(2,6,8,10) C=(2,6,10) Find i)AuB ii) AnB iii)BuC iv) AnBnC v) AnBuC
3 answers
asked by
Nathaniel Benson
45 views
for the sets {1,3,5,7,9} and {1,2,3,4,5} Define the �¿ and the U.
1 answer
asked by
Anonymous please help! :)
612 views
Determine AU(C'UB')
U= {a,b,c,d,e,f,g,h,i,j,k} A= {a,c,d,f,g,i} B={b,c,d,f,g} C={a,b,f,i,j)
1 answer
asked by
carol
250 views
let A be a nonempty set such that
A *B = A *C show that B = C
1 answer
asked by
Anonymous
302 views
let A be a nonempty set such that
A *B = A *C show that B = C
1 answer
asked by
Anonymous
321 views
conjecture 17 if A, B, and C are sets, then (A\B)U C = A\(BUC)
1 answer
asked by
luckybee
275 views
Give an example of languages L1 and L2 that satisfy the conditions (a)
L1L2=L2L1, (b) L2 is a proper nonempty subset of L1, and
4 answers
asked by
Vicky Muda
495 views
AN INTEGER IS RANDOMLY SELECTED AND PERMANENTLY REMOVED FROM THE SET OF 100 INTEGERS (1,2,3,...100). WHAT IS THE MINIMUM NUMBER
5 answers
asked by
DEREK
418 views
What is a set notation? Please explain what it is and give examples as well please. It would help a lot. Thank you.
1 answer
asked by
Vanilla Bear
289 views
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