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0
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2
answers
1
Number theory
Why does a perfect square number have odd number of factors?
asked
4 hours
ago
in
Mathematical Logic
by
Sammohan Ganguly
(
41
points)

10
views
numbertheory
0
votes
1
answer
2
Self doubt
There are 10 different balls in such way that 6 balls are white and 4 balls are black. How many different arrangements are possible such way that black ball placed before the white ball ?
asked
20 hours
ago
in
Linear Algebra
by
Raj Kumar 7
Junior
(
837
points)

30
views
engineeringmathematics
discretemathematics
0
votes
0
answers
3
Probability
murder takes place in an isolated village with 500 inhabitants. The police believe that red polyester fibers will have been transferred on to the murderer's clothes during the assault. Forensic experiments reveal that a probability of 0.9 can be assigned to such a transfer while the ... (a) P(guilt fibers present) (b) P(fibresguilt) (c) P(fibers) (d) P(guilt and fibers present).
[closed]
asked
1 day
ago
in
Mathematical Logic
by
Abhi Girin
(
419
points)

56
views
probability
conditionalprobability
0
votes
1
answer
4
Partial ordering
Is partial ordering and hasse diagram stuffs present in GATE 2019 Syllabus. Because topological order is already there in algorithems. Can anybody plz provide topic wise GATE 2019 Syllabus i am not getting it topic wise. Thanku in advance
asked
2 days
ago
in
Mathematical Logic
by
Na462
Active
(
1.6k
points)

20
views
nooftopologicalordering
0
votes
3
answers
5
ISRODEC20176
The proposition $(P\Rightarrow Q)\wedge (Q\Rightarrow P)$ is a Tautology Contradiction Contingency Absurdity
asked
2 days
ago
in
Probability
by
jjayantamahata
Active
(
1.1k
points)

28
views
propositionallogic
0
votes
1
answer
6
IIT Kanpur Sample Test Paper
Given an undirected graph with vertices as your friends and edges between people who do not talk to each other. Your task is to invite as many guests to your party such that there are no two friends at the party who have problem talking to each ... instance of: A. Maximum vertex cover. B. Maximum cut. C. Maximum eigenvalue of adjacency matrix. D. None of the above.
asked
2 days
ago
in
Graph Theory
by
Churchill Khangar
Active
(
2k
points)

49
views
iitkanpur
writtentest
0
votes
0
answers
7
#Pigeonhole Principle Doubt
How many positive integers not exceeding 1000 are divisible by 7? So, the doubt here is why we are taking floor function while calculating this .
asked
3 days
ago
in
Combinatory
by
Abhinavg
(
127
points)

36
views
pegionhole
#counting
+2
votes
2
answers
8
Sheldon Ross A first course in Probability
asked
3 days
ago
in
Probability
by
Subham Nagar
(
405
points)

46
views
probability
sheldonross
0
votes
0
answers
9
ISI200430
asked
3 days
ago
in
Mathematical Logic
by
jjayantamahata
Active
(
1.1k
points)

24
views
0
votes
0
answers
10
ISI200430
asked
3 days
ago
in
Mathematical Logic
by
jjayantamahata
Active
(
1.1k
points)

34
views
0
votes
0
answers
11
probability
asked
3 days
ago
in
Probability
by
Prince Sindhiya
(
355
points)

56
views
0
votes
2
answers
12
definite integration
asked
3 days
ago
in
Calculus
by
Prince Sindhiya
(
355
points)

59
views
+1
vote
2
answers
13
linear algebra
asked
3 days
ago
in
Linear Algebra
by
Prince Sindhiya
(
355
points)

42
views
0
votes
1
answer
14
Propositional logic
Sagar will marry Sheela only if She is a graduate and a good cook. Which is True ? 1.Sheela is a good cook but not a graduate hence Sagar will not marry sheela. 2.Sagar will marry sheela since she is a good cook though she is not a graduate. 3 ... and a good cook implies Sagar will marry Sheela 4.Sagar did not marry Sheela implies that she is neither a graduate nor a good cook.
asked
4 days
ago
in
Mathematical Logic
by
Na462
Active
(
1.6k
points)

38
views
propositionallogic
discretemathematics
mathematicallogic
+1
vote
1
answer
15
Set system and linear algebra
We have $m$ sets $A_1,A_2,A_3 \text{ to } A_m$. All $A_i \subseteq [n]$ where $ [n] = \{1,2,3, \dots n \}.$ Given that $A_i = \text{odd number}$ and $A_i \cap A_j = \text{even number }\forall i \neq j$. Show that $m \leq n$.
asked
4 days
ago
in
Set Theory & Algebra
by
Debashish Deka
Veteran
(
56.2k
points)

128
views
sets
linearalgebra
0
votes
1
answer
16
ISI200423
asked
4 days
ago
in
Mathematical Logic
by
jjayantamahata
Active
(
1.1k
points)

18
views
0
votes
1
answer
17
ISI200416
asked
4 days
ago
in
Mathematical Logic
by
jjayantamahata
Active
(
1.1k
points)

15
views
+1
vote
1
answer
18
Narsingh Deo Problem 228
asked
4 days
ago
in
Graph Theory
by
ankitgupta.1729
Active
(
4.2k
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41
views
graphtheory
narsingh
deo
0
votes
1
answer
19
ISI200414
asked
4 days
ago
in
Mathematical Logic
by
jjayantamahata
Active
(
1.1k
points)

9
views
0
votes
0
answers
20
ISI MMA QROR
For n ≥ 1, let Gn be the geometric mean of { sin (π/2 . k/n) : 1 ≤ k ≤ n } Then lim n→∞ Gn is
asked
4 days
ago
in
Calculus
by
Partha De
(
7
points)

13
views
trigonometry
complexnumber
0
votes
1
answer
21
PGEE Sample paper
More than one option can be correct
[closed]
asked
4 days
ago
in
Mathematical Logic
by
Akhilesh Singla
Active
(
3k
points)

63
views
iiithpgee
propositionallogic
0
votes
0
answers
22
PGEE Sample paper
More than one option can be correct
[closed]
asked
4 days
ago
in
Mathematical Logic
by
Akhilesh Singla
Active
(
3k
points)

87
views
iiithpgee
propositionallogic
0
votes
2
answers
23
GATE question
Q. 6 Xs has to be placed in the figure below such that each row contains at least one X. In how many ways can this be done? a) 160 b) 180 c) 170 d) 26
asked
4 days
ago
in
Combinatory
by
Sachin Kumar Verma
(
49
points)

63
views
permutationsandcombinations
0
votes
1
answer
24
Show that the two graphs are isomorphic (Narsingh Deo)
asked
4 days
ago
in
Graph Theory
by
Mk Utkarsh
Boss
(
11.7k
points)

16
views
graphtheory
narsingh
deo
graphisomorphism
0
votes
0
answers
25
Combinations with 3 Jugs
You are given 3 jugs A,B and C of capacities 8, 5 and 3 liters, respectively. A is filled and B and C are empty. Total amount of water is 8 liters. How many different combinations are possible with at least one of the jug being empty or atleast one of them being full. For example $(8,0,0)$ , $(4,4,0)$ , $(5,3,0)$
[closed]
asked
5 days
ago
in
Combinatory
by
Mk Utkarsh
Boss
(
11.7k
points)

52
views
permutationsandcombinations
+1
vote
1
answer
26
Graph Theory
Let G be a simple graph in which every vertex has degree 3. Prove that G decomposes into claws iff G is bipartite.
asked
5 days
ago
in
Graph Theory
by
Sammohan Ganguly
(
41
points)

13
views
graphtheory
discretemathematics
0
votes
1
answer
27
ISI200410
asked
5 days
ago
in
Mathematical Logic
by
jjayantamahata
Active
(
1.1k
points)

15
views
0
votes
1
answer
28
ISI200411
asked
5 days
ago
in
Mathematical Logic
by
jjayantamahata
Active
(
1.1k
points)

30
views
0
votes
1
answer
29
ISII20048
asked
5 days
ago
in
Mathematical Logic
by
jjayantamahata
Active
(
1.1k
points)

14
views
0
votes
1
answer
30
Combinatorics
How many ways we can move from a point (a,b) to a point (i,j) in a coordinate system. Here i>a and j>b and at each step you can move to the right or in the upward direction.
asked
6 days
ago
in
Combinatory
by
Kushagra Chatterjee
Junior
(
761
points)

48
views
permutationsandcombinations
engineeringmathematics
general
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