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suomynonA
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36 votes
Accepted

Show that the numerator of $1+\frac12 +\frac13 +\cdots +\frac1{96}$ is divisible by $97$

19 votes
Accepted

Proving if it is possible to write 1 as the sum of the reciprocals of x odd integers

12 votes

How can I find the perimeter of a concave pentagon?

11 votes
Accepted

Given the average of 15 students, and the average of 10 of them, what's the average of the other 5?

11 votes
Accepted

Algebra solve for $x$ in the equation $x^3 = x$

10 votes

What is the fewest number of squares required to cover a $11\times13\text{ cm}$ rectangle without overlap?

10 votes
Accepted

Drawing two cards from a deck of 16 (4 ranks and 4 suits)

10 votes
Accepted

Different ways to factor

10 votes
Accepted

Solving the equation $(x^2-3x+1)^2=4x^2-12x+9$

9 votes

How do you find the area of a parallelogram with the vertices?

7 votes

Problem based on ages of two persons.

7 votes
Accepted

Find integer that satisfies two congruences

7 votes

Letters of "About"

7 votes
Accepted

Generating the equation for probability

7 votes

Knight and Knaves logic problem

7 votes
Accepted

Number of $3$s in the units place

7 votes
Accepted

Geometry Math 8th (Area of a Trapezoid)

6 votes

How to compare units?

6 votes

Is f(x)=0 considered continous?

6 votes

Permutations of the word ENGLAND such that permutations start and end with a vowel

6 votes

How many ways can multiple artworks be displayed?

6 votes

Best way to learn maths - proofs or exercises?

6 votes
Accepted

Derivative of an expression

6 votes

Probability against winning a raffle

6 votes

What is the least possible denominator of such a positive rational number?

6 votes

strange duel chances and my analysis

6 votes

Question based on numbers

6 votes

Runners and their chance of winning

6 votes

$\frac{(x-1)(x+1)}{ (x+1)} \rightarrow (x-1)$ Domain Change

5 votes

Arrangements of "dictionary" with no two consecutive vowels