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Question 1149313: In a class of 36 students 25 study chemistry and 22 study mathematics and 25
study physics ,17 study physics and mathematics,18 study physics and
chemistry,15 study one of the three subject Find a)Those who study all three
subject b) only mathematics and chemistry
Click here to see answer by math_helper(2461)

Question 1149461: Define aperiodic semi group? Give three examples of aperiodic semigroup which are finite.
Click here to see answer by ikleyn(52781)

Question 1149479: Give example for monogenic semigroup with table given below?
* a b c
a b c b
b c b c
c b c b
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Question 1149460: What is aperiodic semi group? Construct three different examples of aperiodic semigroup.
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Question 1149459: What is periodic semi group? Construct three examples of periodic semigroup.
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Question 1151151: in a recent survay of 400 students in a school 100 were listed as smokers and 150 as chewers of gum,75 were disted as both smokers and and gum chewers. find out how many non gum chewers

Click here to see answer by ikleyn(52781)

Question 1151779: In a survey of 100 student the number of student studying various language where find to be: Arabic-28, french-30, yoruba-42, Arabic and yoruba-10, Arabic and french-8, french and yoruba-5, all the three language-3
(1). How many student where studying no language
(2). How many student had yoruba as their only language
(3). How many student study french if and only if study yoruba
Click here to see answer by Theo(13342)

Question 1151859: LetU = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
{x|x is a multiple of 2} ∩ {x|x is a multiple of 5}
Click here to see answer by ikleyn(52781)

Question 1151778: In an international library there are 400 employees:
There are 150 men,
276 university graduates,
212 married persons.
94 male University graduates,
151 married University graduates.
Find the number of single women who are not University graduates.
Click here to see answer by Edwin McCravy(20055)

Question 1152401: List the four smallest elements of the set. (Enter your answers as a comma-separated list.)
{y|y = x2 − 9, x is in integers}
Click here to see answer by ikleyn(52781)

Question 1153479: A group of 2457 students were surveyed about the courses they were taking at their college with the following results:
1075 students said they were taking English.
1249 students said they were taking Science.
1108 students said they were taking Psychology.
473 students said they were taking Psychology and English.
534 students said they were taking Science and Psychology.
594 students said they were taking Science and English.
251 students said they were taking all three courses.
a) Fill in the following Venn Diagram with the cardinality of each region.
a) How many students took Science & Psychology or took Psychology & English?

b) How many students took Psychology and English, but not Science?

c) How many students took Science or didn't take Psychology?

d) How many students took Science, Psychology, or English?

e) How many students took Science or English, but not Psychology?

f) How many students took none of the courses?
Click here to see answer by jim_thompson5910(35256)

Question 1153905: express the set in roster format {x|x Є N and 7 ≤ x < 12}
Please show steps.
Thank you in advance,
SYL
Click here to see answer by MathLover1(20849)

Question 1153930: Find the next 6 digit number in this sequence
812564 , 967375, 017223, 453522, 529924, 510541, 491774, 589227, 781403, 875938
Click here to see answer by greenestamps(13200)

Question 1155136: Suppose Set A contains 66 elements and Set B contains 94 elements. If Sets A and B have 1 elements in common, what is the total number elements in either Set A or Set B.

Click here to see answer by mananth(16946)

Question 1156635: Find the complement of the set given that U = {0,1,2,3,4,5,6,7,8,9,10,11,12}
( Enter your answers as a comma separated list)
{ x | x £ W and x < 8 }
Click here to see answer by ikleyn(52781)

Question 1157116: 1. The sum of two numbers is 30. Five times the smaller exceeds twice the larger by 17. Find the numbers.
2. Tim is 1/5 as old as Tom. In six years, Tim will be 1/3 as old. Find their present ages.
3. A man invested part of $15,000 at 12% and the remainder at 8%. If his annual income from the two investments is $1456, how much does he have invested at each rate?
4. How many gallons of cottonseed oil must be added to 45 gallons of a solution of olive oil, which is 90% olive oil, in order to make the resulting solution 80% olive oil?
5. Tea worth $4.10 per pound is to be mixed with tea worth $4.90 per pound. How many pounds of each should be used to obtain 25 lb. of a blend worth $4.40 per pound?
i hope you can help me for this... although my teacher gave me a sample but i can't understand... thank you :)
Click here to see answer by VFBundy(438)

Question 1157621: Solve the following problems completely and logically.
Problem 1: Construct a difference table to determine the next term in the sequence
17,15,25,53,105,18, ___.
Problem 2: Determine the nth-term formula for the number of square tiles
in the nth figure. Then use this to find the number of square tiles
in the 30th figure.
a1=2squares, a2=4squares, a3=6squares, a4=8squares, a5=10squares
Problem 3: One straight cut across a pizza produces 2 pieces. Two cuts can produce a
maximum of 4 pieces. Three cuts can produce a maximum of 7 pieces. Four cuts can produce
a maximum of 11 pieces. Find the maximum number of pieces that can be produced
Click here to see answer by greenestamps(13200)

Question 1158294: `Solve the following problems completely and logically.
Problem 1: Construct a difference table to determine the next term in the sequence
17,15,25,53,105,18, ___.
Problem 2: Determine the nth-term formula for the number of square tiles
in the nth figure. Then use this to find the number of square tiles
in the 30th figure.
a1=2squares, a2=4squares, a3=6squares, a4=8squares, a5=10squares
Problem 3: One straight cut across a pizza produces 2 pieces. Two cuts can produce a
maximum of 4 pieces. Three cuts can produce a maximum of 7 pieces. Four cuts can produce
a maximum of 11 pieces. Find the maximum number of pieces that can be produced''.
I hope you receive the copy of the problem via reply on the mail... PLEASE HELP ME WITH MY MATH SUBJECT!!!
Click here to see answer by MathLover1(20849)

Question 1161276: {x | x is an integer between 3 and 7}
Click here to see answer by MathLover1(20849)

Question 1161276: {x | x is an integer between 3 and 7}
Click here to see answer by ikleyn(52781)

Question 1161746: In an indoor games tournament at Sekolah Menengah Tanjung Malim, medals are
awarded in three games. 36 medals in chess game, 12 medals in scrabble and 18
medals in sahibba.
If these medals went to a total of 45 students and only 4 students got medals in all
three games, how many students received medals in exactly two of these games?
Draw a Venn diagram to help you answering this problem.
Click here to see answer by ikleyn(52781)

Question 1161745: In an indoor games tournament at Sekolah Menengah Tanjung Malim, medals are
awarded in three games. 36 medals in chess game, 12 medals in scrabble and 18
medals in sahibba.
If these medals went to a total of 45 students and only 4 students got medals in all
three games, how many students received medals in exactly two of these games?
Draw a Venn diagram to help you answering this problem.
Click here to see answer by ikleyn(52781)

Question 1164084: Logic: Set and operations - Cardinal numbers and surveys
A nurse conducted a survey with 75 patients admitted to the hospital. Let B = the set of patients with high blood pressure, C = the set of patients with high cholesterol level, F = the set of patients who smoke cigarettes. The information from the nurse is as follows: n(B)=47; n(B∩S)=33; n(C)=46; n(B∩C)=31; n(S)=52; n(B∩C∩S)=21; n[(B∩C)∪(B∩S)∪(C∩S)]=51.
Find the number of patients who
(a) they had high blood pressure or high cholesterol, but not both.
(b) had fewer than two of the conditions listed.
(c) they were smokers, but did not have high blood pressure or high cholesterol.
(d) did not present exactly two of the conditions on the list.
Click here to see answer by ikleyn(52781)

Question 1164082: Set Theory- Cardinal numbers and polls Word Problem
A singer-songwriter writes and produces albums for various musicians. Last year I worked on 10 projects. He wrote and produced 2 projects. Wrote a total of 5 projects. Produced a total of 7 projects. a) How many projects did you write, but did not produce? b) How many projects did you produce, but did not write?
Click here to see answer by ikleyn(52781)

Question 1164083: Logic: Set and operations - Cardinal numbers and surveys
A student conducted a survey at her school to find out the top goals
students currently have. Let W = the set of those who want to get rich,
F = the set of those who want to start a family, and E = the set of those
who want to become experts in their fields. The student's findings were:
n (W) = 160; n (F) = 140; n (E) = 130; n (W∩F) = 95; n (E∩F) = 90;
n (W∩F∩E) = 80; n (E ') = 95; n [(W∪F∪E)'] = 10. Find the total number of
students interviewed.
Click here to see answer by Edwin McCravy(20055)

Question 1164105: Logic: Set and operations - Cardinal numbers and surveys
A nurse conducted a survey with 75 patients admitted to the hospital.
Let B = (Blood) the set of patients with high Blood pressure,
C = (Cholesterol) the set of patients with high Cholesterol level,
S = (Smoke) the set of patients who Smoke cigarettes.
The information from the nurse is as follows:
n(B)=47; n(B∩S)=33; n(C)=46; n(B∩C)=31; n(S)=52; n(B∩C∩S)=21;
n[(B∩C)∪(B∩S)∪(C∩S)]=51.
Find the number of patients who
(a) had high blood pressure or high cholesterol, but not both?
(b) had fewer than two of the conditions listed?
(c) were smokers, but did not have high blood pressure or high cholesterol?
(d) did not present exactly two of the conditions on the list?
Click here to see answer by Edwin McCravy(20055)

Question 1164547: Create a truth table for the expression [(p → q) ∧ p] → q.

Click here to see answer by Edwin McCravy(20055)

Question 1164085: Logic: Set and operations - Cardinal numbers and surveys
A director of Financial Aid for a small university inspected the records of 100 students and found the following:
49 receive government scholarships,
55 receive private scholarships,
43 receive college aid,
23 receive government scholarships and private scholarships,
18 receive scholarships. government and university aid,
28 receive private scholarships and university aid,
8 receive aid from all three sources.
a-How many of the students in the survey have only government scholarships?
b-How many of the students in the survey have a private scholarship but not a government scholarship?
c-How many of the students in the survey receive financial aid from only one of these sources?
d-How many of the students in the survey receive help from exactly two sources?
e-How many of the students in the survey do not receive financial aid from any of these sources?
f-How many of the students in the survey do not receive financial aid from the university or the government?
Click here to see answer by Boreal(15235)

Question 1165486: A coal merchant charges 8 pesos per kilo of coal plus a fixed delivery charge of 5 pesos.How much coal can be delivered for 50 pesos?

Click here to see answer by josgarithmetic(39617)

Question 1165763: show the difference one-to-one correspondence between {1,2,3,4} and {S,T,U,V}
Click here to see answer by greenestamps(13200)

Question 1166335: Carter has 3 questions of various sizes in his garden. Statue S is one foot taller than Statue B. Statue C is one half of a foot taller than statue B

Click here to see answer by ikleyn(52781)

Question 1166403: Let U = {a, b, c, d, e, f, g, h, i, j, k, l} and A = { a, c, f, h, k, l}
Find the complement of set A.

Click here to see answer by solver91311(24713)

Question 1167148: What are the possible formula of this pattern/sequence?
1,2,6,7,21,22,66,77
Click here to see answer by Edwin McCravy(20055)

Question 1167141: Let U = {x ∈ Z | 0 ≤ x ≤ 20}. Also, let A = set of all even integers;
B= set of all prime numbers; C = set of all numbers coprime with 2; and
D={y ∈ U | y = 2z + 3, for some z∈Z}.
Represent sets A, B, C, D using set-roster notation.

Click here to see answer by Edwin McCravy(20055)

Question 1167227: Given sets A={1,2,3} and B={0,-1,-2}, find every elements of AxB
Click here to see answer by ikleyn(52781)

Question 1167399: Given sets A={1,2,3}and B={0,-1,-2} find every elements of A×B
Click here to see answer by ikleyn(52781)

Question 1167409: A survey carried out recently to find the number of applicants that applied for jobs into 3 newspaper establishment, revealed that 70 applied to daily times, 65 applied to Daily graphics and 85 applied to daily punch. 40 applied to daily times only, 20 applied to daily graphics only while 45 applied to daily punch only. If 15 applied to all three newspaper establishment, find:The number that applied to both daily times and daily graphics
Click here to see answer by Theo(13342)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035