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#2421
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Zeal Test Series 2019: Set Theory & Algebra - Functions
Let f : A → B be function, where A = {1,2,3,4,5,6} and B = {1,2,3,4,5}.If f(1) = 4 then how many surjective (onto) functions are possible ?
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#2422
682
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2 answers
2 votes
Zeal Test Series 2019: Set Theory & Algebra - Relations
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#2423
415
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1 answers
2 votes
Zeal Test Series 2019: Mathematical Logic - First Order Logic
Its answer is D) can anyone explain what is difference between a) and d)
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#2424
912
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0 answers
3 votes
Zeal Test Series 2019: Graph Theory - Graph Connectivity
i didn't read the concept related to strongly connected components please it describe it for this question
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#2425
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1 answers
1 votes
How to find total no of integer solutions to the below equation ?
In X+y+z<=12 , X,y,z>=1 How to find total no of integral solutions ?If you are introducing any dummy variable for solving , please do explain the logic behind this .
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#2426
157
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0 answers
0 votes
Virtual gate
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#2427
593
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0 answers
1 votes
Zeal Workbook: Mathematical Logic - First Order Logic
Its answer is a) but here more(x,y) is given means it should be like this -- x is more than y then isn't a) is wrong
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#2428
880
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1 answers
0 votes
Zeal Workbook: Mathematical Logic - First Order Logic
How to write the last line of Qno. 19 - irrespective of whether the system has been armed the alarm should go off when there is fireFor Qno 20 I am getting iii) and iv) as true but answer is a) please check the 5th one
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#2429
596
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1 answers
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Zeal Test Series: Mathematical Logic - First Order Logic
1)How to do question no. 34,36
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#2430
555
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0 answers
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Zeal Workbook: Mathematical Logic - First Order Logic
I am getting b) but right option is a) please check it
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#2431
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0 answers
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Zeal Workbook: Mathematical Logic - First Order Logic
Answer for this is a) but m getting d) as right option please check it
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#2432
834
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1 answers
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Zeal Workbook: Mathematical Logic - First Order Logic
answer for this is A) My doubt is why D) can't be the answer
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#2433
561
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1 answers
0 votes
Set Theory
If A = {1,2,3...n}, then number of equivalence relations possible on A , which are also surjection on A is ________________?How to approach this type of problems?
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#2434
632
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1 answers
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Bijective function
Let R be set of all real numbers, and A = B = R*RA function A-> B is defined byf(a,b) = (a+b,a-b)How to prove it is a bijective function?
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#2435
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1 answers
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Set Theory
A relation R on a set of positive integers is defined by (a,b) belongs to R iff a and b are relatively prime.Which of the following is true about R?a. Symmetric ... transitive The Ans is given as (d) but I think (b) is true. Any thoughts?
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#2436
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0 answers
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self doubt
what will be the number of even permutations of n objects?i already go through this linkhttp://mathworld.wolfram.com/EvenPermutation.html didnt get much
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#2437
330
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0 answers
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SELF DOUBT KENETH ROSEN 7TH EDITION PAGE 405 Q 17
A company stores products in a warehouse. Storage binsin this warehouse are specified by their aisle, locationin the aisle, and shelf. There are 50 aisles, 85 ... bin?DOUBT:CAN ANY ONE FRAME THIS WAREHOUSE HOW THIS LOOKS LIKE ACTUALLY .?
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#2438
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0 answers
1 votes
Rosen
How many positive integers less than 1,000,000 have thesum of their digits equal to 19?Doubt 1: I understood till C(24,5). Now while subtracting ... repetition allowed. Then how it is unfavorable according to solution given?plz correct me.
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#2439
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0 answers
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Kenneth Rosen Edition 6th Exercise 2.3 Question 18 (Page No. 147)
Consider all below functions are from $R \rightarrow R$Determine whether these functions are one-to-one, and onto.(a)$f(x)=-3x+4$ -->Bijection(b)$f(x)=-3x^2+7$- ... one-to-one but not onto(d)$f(x)=x^5+1$--->BijectionAre my answers correct.?
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#2440
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Regular graph coloring
If G is a connected k-regular graph with chromatic number k+1, then find the number of edges in G?
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