Questions on Logic: Sets and operations answered by real tutors!

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 sets and operations Calculators and Practice Answers archive Word Problems Lessons In Depth

 Question 759010: What is the n(A) in the following sets {1,3,5,7}? Click here to see answer by solver91311(17077)

 Question 756455: If x is an element of A and B, is x an element of A union B'? Click here to see answer by Alan3354(31518)

 Question 756456: If A is a subset of B and A is a subset of C, is B intersection C not equal to A? Click here to see answer by MathLover1(6812)

 Question 756426: For every 5 female student in a class, there is 1 male student. what is the ratio of female to male students in class?. I think it is 5 to 1 but I am not sure. Thank you for you help. Click here to see answer by Cromlix(708)

 Question 752657: show that if a subset b, then c-b subset c-a. Click here to see answer by dkppathak(100)

 Question 752450: Let U = { a, e, i, o, u} A = { a, o} B = { a, e, i} C = { e, i, o, u} Find A'U B U C' Click here to see answer by Edwin McCravy(8999)

 Question 747920: Let S be the universal set, where: S = {1,2,3,...,18,19,20} Let sets A and B be subsets of S, where: Set A = \{2,5,6,7,8,10,11,13,15,18,19} Set B = \{1,2,3,7,9,13,14,18,19} Click here to see answer by tommyt3rd(1110)

 Question 742946: A car is traveling at a rate of 63 kilometer per hour. what is the car rate in Kilometer per min? how many K will the car travel in 10 minutes? Do not round. Click here to see answer by davethejackal(28)

 Question 742962: 2=6 3=12 4=20 5=30 6=42 9=?? I think the answer is 56 and my husband says 90. Who's correct? Click here to see answer by fcabanski(889)

 Question 740841: I am trying to create a three circle Venn diagram with unions and intersections. I can answer the question written out in a list form, but I can't seem to understand how it looks on a three circle Venn diagram. We are using attribute blocks via a virtual manipulative kit. There are 3 colors - red, blue, yellow; 4 shapes - square, circle, hexagon and triangle and 2 sizes - large and small. So total, there are 24 different attribute blocks. The question we were given is to show: (S U T) U NR, which is (square union triangle), union not red. I understand union will include all of those things, but again, can't seem to understand what that will look like on a Venn diagram. Since I can't upload the picture I took, it looks like this: top left circle - all squares, top right circle - all triangles, bottom circle - anything that isn't red, outside the circles - red circles and red hexagons. HELP!!! Click here to see answer by solver91311(17077)

 Question 736918: a survey of 65 people was conducted during a seafood night in a local community.25 people like lobster,30 like fish and 19 like whelks.4 liked lobster and whelks only,2 liked whelks and fish only and 3 liked fish and lobster only.6 people did not like any of the 3 choices. (a)Determine the number of people who liked all three choices. Click here to see answer by lynnlo(4169)

 Question 734096: Asurvey was taken of a number of people as to which of three forms of exercise, running, R, walking, W or cycling, C, they did to keep fit. Each person used one or more of these exercises. The results are as follows: 25 run, 16 walk and 22 cycle. 10 run an walk , 11 run and cycle , 8 walk and cycle . Let x be the number take all three forms of exercise. 1/ Show that the number of people that use at least one of form of these exercise is 34+ x. 2/ Find : a/ the greatest and b/ the least value of x 3/Hence or otherwise find the greatest number of people that were in the survey 4/ If a total of 40 people took part in the survey , calculate the value of x . Click here to see answer by KMST(1936)

 Question 730550: For Stats- If A:(1,3,5,7) and B: (1,2,3,4,5), find P(B/A)? Click here to see answer by stanbon(57962)

 Question 728820: Use a venn diagrams to illustrate each statement! A ∩ B ⊆ A; A ∩ B ⊆ B Thank You Gabe Click here to see answer by solver91311(17077)

 Question 728236: List the elements of the set in roster notation. (Enter Ø for the empty set.) {x | x is a letter of the word TALLAHASSEE} X= Click here to see answer by Edwin McCravy(8999)

 Question 727221: A is the set of whole number factors of 12, and B is the set of whole number factors of 9. Determine whether the statement B ⊆ A is true or false. Use a Venn diagram to support your answer Click here to see answer by lynnlo(4169)

 Question 724863: a) Determine the sets A, B where A − B = {1, 3, 7, 11}, B – A= {2, 6, 8}, and A ∩ B= {4, 9}. b) Determine the sets C, D where C − D = {1, 2, 4}, D − C = {7, 8}, and C ∪ D= {1, 2, 4, 5, 7, 8, 9} Click here to see answer by AnlytcPhil(1278)

 Question 716739: How do I answer these? 2. True or False: {6} ϵ {1.2.3.4.5.6.7} ____________ 3. True or False: {d,e,f,g} ⊆ {a,b,c,d,e,f} ___________ 4. True or False: {3,4,5} ⊂ {x|xϵ N and x < 6} ________ Click here to see answer by ahmadsolehin(6)

 Question 198366: I really don't understand please help. 1.Given U = {All letters of the alphabet}, A = {c, d, e, f}, and B = {e, f, g, h, k}. List the elements of set (a) A U B (b) A ∩ B (c) A′ ∩ B′ (d) A′ U B′ (e) A U B′ (f) (A U B′) ∩ B (g) (A U B) ∩ (A U B′ Click here to see answer by ahmadsolehin(6)

 Question 721843: How do i show 45 divided by 2,297 using showing my work Click here to see answer by solver91311(17077)

 Question 717981: Hello, I'm doing homework doing 3 set survey problems using a Venn diagram, and I am stuck on one questions. Of 43 people at the market, 8 people bought all three products, Cheeriums (C), Brain Flakes (B), and Soymilk (S). 37 people bought either Brain Flakes or Cheeriums. 2 people didn't buy any of the three. 29 people bought Soymilk. 22 bought both Soymilk and Brain Flakes. 27 bought Brain Flakes. 19 bought Brain Flakes, but not Cheeriums. Use this information to fill in the appropriate numbers in a Venn diagram. Can anyone please help me with this? Thank You Click here to see answer by lynnlo(4169)

 Question 713230: Suppose P and Q are equivalent sets and n(P)=17. What is the minimum number of elements in P u Q? What is the maximum? What is the minimum number of elements in P n Q? What is the maximum? Click here to see answer by stanbon(57962)

 Question 712639: If 123 base b =83 solve for b. I would be happy if someone could even just show me the steps, please. Click here to see answer by jim_thompson5910(28708)

 Question 712602: Convert the following to base ten: a) E0T base 12 b)1011 base 2 c)43 base 5 Any help with this would be great! I am completely lost in these other number systems. Click here to see answer by Alan3354(31518)

 Question 712051: Greg is 13 years older than his brother. in nine years, Greg will be twice as old as his brother. How old are they now Click here to see answer by Menjax(41)

 Question 710900: U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}. (Enter your answers as a comma-separated list. Enter EMPTY for the empty set.) {3, 4, 6} union {4, 6, 7} Click here to see answer by jim_thompson5910(28708)

 Question 706013: Write the compound statement in words. Let p: Joe has an iPad. q: Brie has a MacBook; ~p Click here to see answer by solver91311(17077)

 Question 705194: Hi. I've been having trouble with this equation. There's so many steps that I cannot even figure out where I went wrong. Can you please show me step-by-step how to solve this equation and also provide an equation with variable instead of the numbers given so I know how to solve this problem with any numbers. Thanks in advance. An airline sells all the tickets for a certain route at the same price. If it charges 200 dollars per ticket it sells 10,000 tickets. For every 45 dollars the ticket price is reduced, an extra thousand tickets are sold. Thus if the tickets are sold for 155 dollars each then 11,000 tickets sell. It costs the airline 100 dollars to fly a person. (a) Express the total profit P in terms of the number n of tickets sold. (b) Express the total profit P in terms of the price p of one ticket. (a) P(n)= _____ \$ (b) P(p)= _____ \$ Click here to see answer by josgarithmetic(1767)

 Question 704890: use the digits 2, 3, 5 and 7 so the product is 945. need to show work Click here to see answer by josgarithmetic(1767)

 Question 704176: Express the following set in set-builder notation. B = {14,15,16,17,18,19,20,21} Click here to see answer by jim_thompson5910(28708)