Most viewed questions in Discrete Mathematics

102 votes
11 answers
34
60 votes
5 answers
35
How many different non-isomorphic Abelian groups of order $4$ are there?$2$$3$$4$$5$
52 votes
15 answers
36
0 votes
2 answers
38
39 votes
8 answers
39
57 votes
11 answers
41
If $G$ is the forest with $n$ vertices and $k$ connected components, how many edges does $G$ have?$\left\lfloor\frac {n}{k}\right\rfloor$$\left\lceil \frac{n}{k} \right\r...
19 votes
18 answers
42
44 votes
10 answers
43
58 votes
9 answers
47
If the ordinary generating function of a sequence $\left \{a_n\right \}_{n=0}^\infty$ is $\large \frac{1+z}{(1-z)^3}$, then $a_3-a_0$ is equal to ___________ .
44 votes
9 answers
49
$G$ is an undirected graph with $n$ vertices and $25$ edges such that each vertex of $G$ has degree at least $3$. Then the maximum possible value of $n$ is _________ .
42 votes
6 answers
50