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Sirswagger21
  • Member for 4 years, 1 month
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20 votes

If the coefficients of a quadratic equation are odd numbers, show that it cannot have rational roots

4 votes
Accepted

A test has 6 questions.

4 votes

Probability of two fair dice rolls having a total of $7$ or $11$?

3 votes
Accepted

Find all pairs of integers $(x, y)$ such that $x^3+y^3=(x+y)^2.$

3 votes

Confused about arrangements on a word

3 votes

Trigonometric Equation $\cos^{2}{x} - \sin{x} = 0$

3 votes
Accepted

If the product of $n$ distinct positive integers is $n^n$. What is the minimum value of their average if $n = 6$?

2 votes
Accepted

I need to simplify $\sqrt[4]{x^{12}}$

2 votes
Accepted

Find the $x$ intercepts of $x^3+x^2-4x-4$

2 votes

Solve the following system of non-linear equations: $x^2+4xy+y^2=13$, $2x^2+3xy=8$.

2 votes

the equation $y^2=4x+4y$ changes to the form $y^2=4x$ if the origin shifted to (without rotating the axis)

2 votes
Accepted

How to do probability question (v)? Why is my logic wrong?

2 votes
Accepted

Finding the mean sales price

2 votes

Prove that $1<\frac{1}{1001}+\frac{1}{1002}+\cdots+\frac{1}{3001}<\frac{4}{3}$

2 votes
Accepted

In how many ways can $18$ be written as the sum of four distinct positive integers?

2 votes

Is it possible to create a new language that translates into words at least the basic operations of math, to make it easier to understand?

1 vote

Venn Diagram Problem - Set of Athletes

1 vote

I'm trying to solve the problem based on absolute values, I'm not sure if what I am doing is right.

1 vote
Accepted

Question about probabilities of lotteries

1 vote
Accepted

simplifying with exponents that must be positive

1 vote

Question on probability, please help me understand the intuition behind it

1 vote

Does the series $\frac{2}{4-1}+\frac{4}{16-1}+\dots+\frac{2k}{4k^2-1}$ have a sum up to $\infty$?

1 vote

Modular Arithmetic with Algebra

1 vote

Prove that there are no integer solutions to $x\left(y^{2}-1\right)=y\left(2+\frac{1}{x}\right)$

1 vote

How can I find the roots of the quartic polynomial $2x^4 −3x^3 +5x^2 +6x−4$?

1 vote
Accepted

Lottery - Odds of Winning Multiple Jackpots on Single Ticket

1 vote

Find the sum $\sum_{n=2}^{\infty} \frac{\binom n2}{4^n} ~~=~~ \frac{\binom 22}{16}+\frac{\binom 32}{64}+\frac{\binom 42}{256}+\cdots$.

1 vote

What is probability 4 people were all born in four different seasons? Same season?

1 vote

In the following answer, since we assumed $a<b$, then how can we write $a \leq b$ in $\gcd(a,b)\leq a\leq b\leq\operatorname{lcm}(a,b)$ statement?

1 vote

Probability of two scenarios happening (I think dependent scenarios)