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Apr
21
answered Distribution of a Gaussian variable with a normally distributed mean
Apr
13
answered Alternative “Fibonacci” sequences and ratio convergence
Apr
8
answered Does sum of the reciprocals of all the composite numbers converge?
Mar
31
answered Algorithm/formula for computing the probability of winning a range of games
Mar
29
answered How many base $10$ numbers are there with $n$ digits and an even number of zeros?
Mar
11
answered What is the limit of (Odd Numbers Product) / (Even Number Product)
Mar
10
answered Log-concave function changes when scalar is added
Mar
10
answered A five-digit number whose square has its last five digits equal to the number.
Mar
10
answered Factoring Numbers with inner nulls
Feb
25
answered Find two vectors in $P$ and check that their sum is not in $P$.
Feb
24
answered If $X $ is distributed as $ U(0,1)$ what is the distribution of $Y = X^3$?
Feb
23
answered An example that a 2D shape with its centre of mass on its boundary
Feb
18
answered What's the chance of drawing 8 or more cards of one suit if you draw 26 cards from a deck?
Feb
17
answered Prove the following trigonometric identity without a calculator involved
Feb
16
answered Show that any two consecutive odd integers are relatively prime
Feb
10
answered Prime counting function; when is it true that $\pi(n) > \pi(2n) -\pi(n)$?
Feb
8
answered Limit of the sequence $\lim_\limits{n\to\infty}\sin(2\pi(n^2+n^{1/2})^{1/2})$.
Feb
5
answered Proof of divisibility: $17 \mid 3 \cdot 5^{2015} + 2^{2017} \cdot 5^{670}$
Feb
3
answered How to calculate number combinations of formulas for a number of propositions
Jan
27
answered Number of ways to roll five 6-sided dice with sum 7