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Recent questions in Discrete Mathematics
1
votes
0
answers
3421
find no. of terms in gp series anyone solve it
$n^3 + \frac{n^3}{9} +\frac{n^3}{9^2} + \frac{n^3}{9^3} +----+n$
$n^3 + \frac{n^3}{9} +\frac{n^3}{9^2} + \frac{n^3}{9^3} + +n$
sumit goyal 1
247
views
sumit goyal 1
asked
Jan 8, 2018
1
votes
0
answers
3422
Difference between cumulative and random distribution function
ankit singh 7
155
views
ankit singh 7
asked
Jan 8, 2018
1
votes
1
answer
3423
how to find no. of terms in Gp series here
$n^2 + 2n^2 + 4n^2 + 8n^2 + ------------ + 8^{logn}$ base =2
$n^2 + 2n^2 + 4n^2 + 8n^2 + + 8^{logn}$base =2
sumit goyal 1
479
views
sumit goyal 1
asked
Jan 8, 2018
2
votes
1
answer
3424
Ace Test series: Graph Theory - Graph Connectivity
Please can anyone tell whether my answer is wrong or solution provided by them is correct??
Please can anyone tell whether my answer is wrong or solution provided by them is correct??
Asim Abbas
472
views
Asim Abbas
asked
Jan 8, 2018
Graph Theory
ace-test-series
graph-theory
graph-connectivity
+
–
1
votes
0
answers
3425
self doubt
i am confuse with 2nd and 4th one
i am confuse with 2nd and 4th one
eyeamgj
240
views
eyeamgj
asked
Jan 7, 2018
3
votes
0
answers
3426
ACE test series
A function f: Z+ ⟶ Z+ is defined by f(x)= maximum of n and 50. which of the following is true? A) f is one to one but not onto B) f is onto but not one to one C) f is bijection D f is neither one to one nor onto
A function f: Z+ ⟶ Z+ is defined by f(x)= maximum of n and 50.which of the following is true?A) f is one to one but not ontoB) f is onto but not one to oneC) f is bijec...
Raveena Yadav 1
389
views
Raveena Yadav 1
asked
Jan 7, 2018
2
votes
0
answers
3427
Arrangement
How many ways are there to distribute 10 balls into 6 boxes with atmost 4 balls in first 2 boxes if the balls are in distinguishable?
How many ways are there to distribute 10 balls into 6 boxes with atmost 4 balls in first 2 boxes if the balls are in distinguishable?
srestha
511
views
srestha
asked
Jan 7, 2018
Combinatory
combinatory
+
–
2
votes
1
answer
3428
Ace Test series: Set Theory & Algebra - Partial Order
L={d,g,h,0} R={f,i,h,0} Am I doing it Correct?
L={d,g,h,0}R={f,i,h,0}Am I doing it Correct?
Ananya Jaiswal 1
419
views
Ananya Jaiswal 1
asked
Jan 7, 2018
Set Theory & Algebra
ace-test-series
set-theory&algebra
partial-order
+
–
4
votes
1
answer
3429
graph theory
Lakshman Bhaiya
683
views
Lakshman Bhaiya
asked
Jan 6, 2018
Graph Theory
discrete-mathematics
graph-theory
+
–
1
votes
0
answers
3430
permutations and combinations
Aditya Bahuguna
300
views
Aditya Bahuguna
asked
Jan 6, 2018
2
votes
0
answers
3431
Mapping
State true or false If gof is surjective, then both g and f are surjective. Is it true or false See the theorem is If gof is surjective, then g is surjective and f need not to be but need not to be doesnot mean, should not be. rt?
State true or falseIf gof is surjective, then both g and f are surjective.Is it true or falseSee the theorem isIf gof is surjective, then g is surjective and f need not ...
srestha
676
views
srestha
asked
Jan 6, 2018
Set Theory & Algebra
discrete-mathematics
+
–
2
votes
1
answer
3432
gate forum test series
2 vertices connected by an edge is a complete graph (G) and for complete graph (Kn) vertex connectivity is (n-1), so for this G connectivity is 1, now will it be considered as a biconnected component of the given graph or not, if yes then why?
2 vertices connected by an edge is a complete graph (G) and for complete graph (Kn) vertex connectivity is (n-1), so for this G connectivity is 1, now will it be consider...
charul
444
views
charul
asked
Jan 6, 2018
Graph Theory
graph-theory
+
–
1
votes
0
answers
3433
abelian
How many different non-isomorphic Abelian groups of order 4 are there? 2 3 4 this is already discussed here https://gateoverflow.in/1219/gate2007-21 doubt 1 - here how do we ensure that the splits formed are abelian groups ? doubt 2 - if order of the group can be prime factorised then its sure to be abelian ? doubt 3 - how is non isomorphism proved in the solution?
How many different non-isomorphic Abelian groups of order 4 are there?234this is already discussed here https://gateoverflow.in/1219/gate2007-21doubt 1 - here how do we e...
A_i_$_h
281
views
A_i_$_h
asked
Jan 6, 2018
2
votes
0
answers
3434
made easy subject wise
A real n × n matrix A = {aij} is defined as follows: aij= i, if i = j, otherwise 0 The determinant of all n eigen values of A is
A real n × n matrix A = {aij} is defined as follows: aij= i, if i = j, otherwise 0The determinant of all n eigen values of A is
Kuldeep Pal
368
views
Kuldeep Pal
asked
Jan 6, 2018
Mathematical Logic
linear-algebra
matrix
+
–
2
votes
1
answer
3435
Engg mathematics
How to study calculus portion for GATE and from which book? Does class 12 knowledge is enough?
How to study calculus portion for GATE and from which book?Does class 12 knowledge is enough?
Anuranjan Chauhan
373
views
Anuranjan Chauhan
asked
Jan 6, 2018
1
votes
0
answers
3436
MadeEasy Test Series: Calculus - Maxima Minima
f(x) = 2x3 – 15x2 + 36x + 1 is increasing in the interval a) b) c)
f(x) = 2x3 – 15x2 + 36x + 1 is increasing in the interval a) b)c)
Kuldeep Pal
304
views
Kuldeep Pal
asked
Jan 6, 2018
Mathematical Logic
made-easy-test-series
calculus
functions
maxima-minima
+
–
1
votes
0
answers
3437
identity element
Let A be the set of all non-singular matrices over real number and let ∗ be the matrix multiplication operation. Then answer - A is group but not abelian DOUBT - in order to be a group it should first first be a monoid ( have identity element) what will be the identity matrix here ?
Let A be the set of all non-singular matrices over real number and let ∗ be the matrix multiplication operation. Thenanswer - A is group but not abelianDOUBT - in order...
A_i_$_h
421
views
A_i_$_h
asked
Jan 6, 2018
3
votes
0
answers
3438
Ace Test series: Combinatory - Permutation and Combinations
My approach :- ways to arrange 6 distinct symbols = 6! Place 2 blanks between each symbol, remaining blanks = 2 Now these 2 blanks can be placed in any of 5 places so = 5*5= 25 ways Total ways = 6!*25 = 18000 But the answer given in 10800 :( please someone tell me where I am wrong.
My approach :- ways to arrange 6 distinct symbols = 6!Place 2 blanks between each symbol, remaining blanks = 2Now these 2 blanks can be placed in any of 5 places so = 5*5...
ashish pal
910
views
ashish pal
asked
Jan 6, 2018
Combinatory
ace-test-series
combinatory
discrete-mathematics
+
–
2
votes
2
answers
3439
Ace Test series: Combinatory - Generating Functions
Answer is B as given in solution.
Answer is B as given in solution.
ashish pal
539
views
ashish pal
asked
Jan 6, 2018
Combinatory
ace-test-series
discrete-mathematics
generating-functions
+
–
4
votes
1
answer
3440
Lattice
Lattice or not and why?
Lattice or not and why?
srestha
1.5k
views
srestha
asked
Jan 6, 2018
Set Theory & Algebra
lattice
discrete-mathematics
+
–
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