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MRobinson's user avatar
MRobinson's user avatar
MRobinson
  • Member for 5 years, 9 months
  • Last seen more than 5 years ago
  • Manchester, UK
10 votes

Optimization explained to a middle school kid

10 votes

Being successful in mathematics depends on hard work or intelligence?

7 votes

If a fair die is rolled 3 times, what are the odds of getting an even number on each of the first 2 rolls, and an odd number on the third roll?

6 votes

If $A=1$, $B=2$, etc, then what word, treated as a product of its letters, has value closest to $1000000$?

4 votes
Accepted

Figuring out Percent of decimals

4 votes
Accepted

How many ways letters be placed so at least two of them are in wrong envelopes?

4 votes

Solving the factorial equation $(n + 4)! = 90(n + 2)!$

3 votes
Accepted

Basic algebra word problem: Number of sheep?

3 votes

What does “$\prod$” mean?

3 votes
Accepted

word problem - hoe to find area from work done and days

3 votes
Accepted

Integrate $\left(x^2e^{x^2}\right)$

3 votes
Accepted

P value for a z-score of 4.9? Or am I doing this wrong?

3 votes

Most efficient strategy for guessing outcome of (fair) dice roll?

3 votes
Accepted

Incorrect Math in Principles of Modern Chemistry

2 votes

Variance of rolls needed for rolling a 6

2 votes

Why is the normal probability curve used to approximate the binomial probability distribution?

2 votes

Combinatorics: How many persons like apples and pears and strawberries?

2 votes

Evaluate $\lim_{x\rightarrow\frac{\pi}{2}^\pm}{\log{\left({\frac{1}{\cos^4x}}\right)}-\tan^2{x}}$

2 votes

Is 0.1 km equals to 100.0 m (in context to significant figures)?

1 vote

A geometric series has second term $6$ and ratio of the seventh term to the sixth term is $3$. What does this question really means?

1 vote

Solving a Ratio Problem with Three Variables

1 vote

Understanding Conditional Probability (Math is Fun)

1 vote

Why Is The Derivative At A Point Drawn As A Tangent Line?

1 vote

Does an exponent apply to an entire term or is BIDMAS applied in the term?

1 vote
Accepted

What is probability of a heart of coin or a club?

1 vote

Let $f : R \to R$ be twice differentiable, $f (x+\pi$) = $f(x)$, $f''(x) + f(x) \geq 0$ $∀$ $x\in {R}$. Prove that $f(x)\geq0$ $∀$ $x\in {R}$

1 vote

Can you explain this to me?

1 vote

Calculating probability that soccer player scores in a certain game with binomial distribution

1 vote
Accepted

A mole of Cheerios

1 vote

Prove $\frac{d}{dx} x^n=nx^{n-1} : \forall n\in \mathbb{Z}_{+}$ by induction