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Uhans
  • Member for 4 years, 4 months
  • Last seen more than 3 years ago
2 votes
1 answer
941 views

In how many ways can you travel from city A to city B

2 votes
1 answer
1k views

In how many ways can you place 32 chess pieces on a standard (8x8) chessboard?

2 votes
3 answers
54 views

show that the following recursive series is bounded and monotonic

2 votes
2 answers
2k views

Find supremum and infimum for $C={\frac{x^2+1}{x^2+2}: x \in \mathbb{R}}.$

2 votes
1 answer
391 views

Using the limit comparison test check if the following series converges

2 votes
1 answer
40 views

Show that for $a,b \in \mathbb{R}$ the following equality is true $a^4-a^2>b^2-b.$

1 vote
0 answers
55 views

Prove that $\lim_{n\to\infty}\frac{1}{a_n}=\frac{1}{g}$ if $\lim_{n\to\infty}a_n=g$ [duplicate]

1 vote
1 answer
34 views

Show that $a_n$ is monotonic and bounded

1 vote
2 answers
63 views

Calculate the expression with logarithm [closed]

0 votes
1 answer
322 views

Plane cutting a pyramid (drawing)

0 votes
1 answer
75 views

Room with $n+k$ places and probability that $m$ places will be taken

0 votes
2 answers
48 views

Using the definition of the limit of a sequence show that zero is not a limit of $a_n$

0 votes
0 answers
20 views

Calculate mean and the covariance function for $\{Y_t\}$

0 votes
1 answer
30 views

Draw a graph of the function and show that the function takes only the values greater than $\frac{1}{2}$

0 votes
2 answers
838 views

Find supremum and infimum for the sets: $A=\{x^2+x+2: x \in \mathbb{R} \},$ $B=\{n^2+n-2: n \in \mathbb{Z} \}.$

0 votes
4 answers
58 views

Find a solution of a trigonometric eguation

0 votes
1 answer
50 views

In how many ways we can put 12 different balls to 4 equal boxes [duplicate]

0 votes
1 answer
54 views

Proof the limit of $c_n$ when $c_n=a_n$ for odd n and $c_n=b_n$ for even n

-1 votes
1 answer
76 views

80% learn English and 50% French. What percentage learns German?