In a population of 100 persons, 40 persons like tea and 30 persons like coffee. 10 persons like both of them. How many persons like only coffee?(a) 10(b) 20(c) 30(d) 40The question was posed to me during an online interview.My question is taken from Venn Diagrams topic in division Sets of Mathematics – Class 11

In a population of 100 persons, 40 persons like tea and 30 persons lik

1.	In a population of 100 persons, 40 persons like tea and 30 persons like coffee. 10 persons like both of them. How many persons like only coffee?(a) 10(b) 20(c) 30(d) 40The question was posed to me during an online interview.My question is taken from Venn Diagrams topic in division Sets of Mathematics – Class 11
Answer» Right option is (b) 20 The best I can explain: GIVEN, a + b + c + d = 100, a + c = 40, b + c = 30, c = 10 b+10=30 => b=20 i.e. 20 PERSONS LIKE only coffee.

Discussion

No Comment Found

Related InterviewSolutions

In a group of students, 100 students know Hindi, 50 know English and 25 know both. Each of the student knows either Hindi or English. How many students are there in the group?(a) 75(b) 100(c) 125(d) 175I had been asked this question by my college director while I was bunking the class.I want to ask this question from Practical Problems on Union and Intersection of Two Sets in portion Sets of Mathematics – Class 11
Which of the following is equal to A∪A’?(a) U(b) A(c) A’(d) U’This question was posed to me in an interview.Origin of the question is Complement of a Set in division Sets of Mathematics – Class 11
(A∪B) ∩ (B∪A) = __________(a) A(b) B(c) A∪B(d) A∩BI have been asked this question in an international level competition.This interesting question is from Operation on Sets-2 topic in chapter Sets of Mathematics – Class 11
If A is set of natural numbers, B is set of odd natural numbers and C is set of even natural numbers, then find B∪C.(a) A(b) B(c) C(d) B-CThis question was addressed to me during an internship interview.This interesting question is from Operation on Sets-2 topic in chapter Sets of Mathematics – Class 11
A={1,2,3}, B={2,3,4}, C={2,3,5}, D={1,3,5,7}. Find (A∩B) ∪ (C∩D).(a) A(b) B(c) C(d) DThe question was asked in homework.Origin of the question is Operation on Sets-2 topic in division Sets of Mathematics – Class 11
How many elements are there in P(A), if A = φ?(a) 1(b) 2(c) 3(d) 4The question was asked in a national level competition.My enquiry is from Power Sets in division Sets of Mathematics – Class 11
Does A-B=B-A always correct?(a) True(b) FalseThis question was addressed to me in my homework.The query is from Operation on Sets-2 in division Sets of Mathematics – Class 11
In the given Venn diagram, is set A subset of set U?(a) True(b) FalseThe question was asked during an online exam.This interesting question is from Venn Diagrams topic in portion Sets of Mathematics – Class 11
If A = {1,3} and B = {1,2,5} then?(a) A⊆B(b) B⊆A(c) Ф⊆A(d) B⊆ФI have been asked this question in an interview for job.Question is taken from Subsets topic in chapter Sets of Mathematics – Class 11
Let X be set of rational numbers. Which of the following is not subset of X?(a) Set of real numbers(b) Set of natural numbers(c) Set of whole numbers(d) Set of integersThis question was addressed to me in semester exam.I'd like to ask this question from Subsets topic in division Sets of Mathematics – Class 11

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment