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Recent questions in Engineering Mathematics
0
votes
1
answer
21
Translate the given statement into propositional logicexpressions:“A man qualifies for the marathon if his best previous time is less than 3 hours and a woman qualifies for the marathon if her best previous time is less than 3.5 hours.
VASEEMUN
asked
in
Mathematical Logic
Oct 29
by
VASEEMUN
128
views
discrete-mathematics
mathematical-logic
propositional-logic
0
votes
0
answers
22
Set theory
Let A = set of all real numbers. '*' be a binary operation a*b = a + b + a. b (A, *) is a group or not. Doubt : Till finding identity element (=0) every thing is okay. While finding inverse: a * $a^{-1}$ = e a + $a^{-1}$ + a$a^{-1}$ = 0 a + $a^{-1}$ + 1 = 0 Or a + $a^{-1}$(1+a) = 0 Both will lead to different answer. What is correct.
Overflow04
asked
in
Set Theory & Algebra
Oct 25
by
Overflow04
95
views
self-doubt
set-theory
0
votes
0
answers
23
Set Theory
If A = {1, 3,5,7,.......} Then (A, +) is semi group or not. Doubt : a +(b+c) =( a + b) +c So associativity property is present But a + b doesn't belong to A So closure property is not present. So A is semi group or not.
Overflow04
asked
in
Set Theory & Algebra
Oct 25
by
Overflow04
67
views
self-doubt
group-theory
set-theory
0
votes
0
answers
24
[email protected]
2022 Test Series
Answer -3.7
Amit Mehta
asked
in
Calculus
Oct 22
by
Amit Mehta
114
views
zeal
test-series
numerical-answers
0
votes
0
answers
25
Matrix
While studying Linear algebra I got 2 perspectives. Which meaning out of these 2 is more accurate?
Mohib
asked
in
Linear Algebra
Oct 17
by
Mohib
109
views
matrix
linear-algebra
engineering-mathematics
1
vote
1
answer
26
Poisson distribution
An 800 page book has 400 misprints. If the misprints are distributed uniformly throughout the book and the Poisson approximation to the binomial distribution is used to calculate the probability of exactly 2 misprints on page 16, which of the following represents the correct use of the Poisson approximation?
kathan Mistry
asked
in
Mathematical Logic
Oct 5
by
kathan Mistry
171
views
probability
poisson-distribution
numerical-answers
0
votes
2
answers
27
is this argument valid: {P->Q , Q->R}-> R'
Shivam_j
asked
in
Mathematical Logic
Oct 3
by
Shivam_j
156
views
mathematical-logic
0
votes
0
answers
28
Topic: Combining relations (Composition of relations)
Let R be a relation. Why $R^2 oR^2 !=R^4$ while $R^3 oR =R^4$? Please explain.
Yamini_learner
asked
in
Set Theory & Algebra
Sep 26
by
Yamini_learner
88
views
relations
1
vote
2
answers
29
KENNITH ROSEN LATTICE
Find a compatible total order for the divisibility relation on the set {1, 2, 3, 6, 8, 12, 24, 36}.
shreyo
asked
in
Set Theory & Algebra
Sep 26
by
shreyo
148
views
discrete-mathematics
kenneth-rosen
lattice
0
votes
1
answer
30
Ace Book for Discreet Mathematics , Combinatorics.
Number of ways to assign 5 different people in 3 different rooms, so that each room contains at least one person?
Satyansh
asked
in
Mathematical Logic
Sep 22
by
Satyansh
191
views
combinatory
ace-booklet
0
votes
0
answers
31
Internet
For f(x)=√x x€[0,b] the number c satisfying mean value therom is c=1
Katyayani0306
asked
in
Calculus
Sep 21
by
Katyayani0306
72
views
continuity
calculus
0
votes
1
answer
32
Engineering mathematics
If A is a non-zero column matrix of order n×1 and B is a non-zero row matrix of order 1×n then rank of AB equals ? Rank(ab) can be zero???
Overflow04
asked
in
Linear Algebra
Sep 21
by
Overflow04
157
views
engineering-mathematics
linear-algebra
matrix
self-doubt
2
votes
2
answers
33
Made Easy: Linear Algebra (MSQ)
Let $A$ be a $3$ x $3$ matrix with rank $2$. Then, $AX=0$ has The trivial solution $X=0$. One independent solution. Two independent solution. Three independent solution.
DebSujit
asked
in
Linear Algebra
Sep 19
by
DebSujit
291
views
linear-algebra
engineering-mathematics
rank-of-matrix
matrix
system-of-equations
0
votes
1
answer
34
[email protected]
Test Series 2023
Ans: 211
Amit Mehta
asked
in
Combinatory
Sep 19
by
Amit Mehta
196
views
combinatory
1
vote
2
answers
35
[email protected]
Test Series 2023
Ans: 43333
Amit Mehta
asked
in
Combinatory
Sep 19
by
Amit Mehta
176
views
combinatory
1
vote
0
answers
36
Self doubt.
If A, B & C are matrices & AB=AC then B=C? as we know it is not always true because when A is singular matrix then B=C not possible so what is the right ans to say B=C is (always not equal) or (may or may not be equal) or (simply not equal)?
Nisha Bharti
asked
in
Linear Algebra
Sep 19
by
Nisha Bharti
141
views
matrix
determinant
0
votes
1
answer
37
Gate At Zeal
Question → If (G,*) is a group of order 960 and there exist a in G such that a^m=e for some integer m<=960 where e is identity element of G then total number of possible value of m is___________ Answer==28
lalitver10
asked
in
Set Theory & Algebra
Sep 17
by
lalitver10
170
views
group-theory
discrete-mathematics
test-series
zeal
1
vote
2
answers
38
PhD Admissions Written Test (Basic)
Let x1, x2, ...x8 be 8 propositional variables. Let · represent AND connective ⊕ represent the Exclusive-or connective. The number of satisfying assignments of the formula x1 ⊕ x2 ⊕ ...x8 is _________________ The number of satisfying assignments of the formula (x1·x2) ⊕ (x3·x4)... ⊕ (x7·x8) is __________________
rsansiya111
asked
in
Mathematical Logic
Sep 11
by
rsansiya111
153
views
written-test
iit
discrete-mathematics
0
votes
1
answer
39
A First Course In Probability, 9th Edition, Indian Version, Sheldon Ross, Chapter 3, Problems, 33.
The meteorology department predicts the rain correctly with a probability of 4/5. When rain is predicted Amit travels by his car. When rain is not forecasted, he travels with his car with a probability of ... a probability of 1/2. Find the probability that Amit does not travel by car given it rains.
jomboy
asked
in
Probability
Sep 10
by
jomboy
193
views
probability
sheldon-ross
conditional-probability
1
vote
1
answer
40
igate test series
Selection of how many integers from the first ten positive integers (1, 2, ...) guarantees that there must be a pair of these integers with a sum equal to 11 ?
jugnu1337
asked
in
Combinatory
Sep 7
by
jugnu1337
174
views
discrete-mathematics
counting
test-series
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