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Recreational-mathematics
New post in Recreational-mathematics
What is the first 21 digit prime in consecutive digits of $e$?
August 24th, 2022
education
recreational-mathematics
Find a quadratic polynomial which when divided by (x-1), (x-2), (x-3) leaves remainders 11, 22, 37 respectively.
August 18th, 2022
polynomials
discrete-mathematics
recreational-mathematics
The hands of a clock are observed continuously from 12:45 pm onwards. They will be observed to point in the same direction some time between
August 15th, 2022
recreational-mathematics
Catherine is now twice as old as Jason but 6 years ago she was 5 times as old as he was. How old is Catherine now?
November 6th, 2022
algebra-precalculus
recreational-mathematics
word-problem
9 hens lay 9 eggs in 9 days...
October 3rd, 2022
logic
recreational-mathematics
How many minimum weights do you need to measure all weights from $1$kg to $1000$kg
July 9th, 2020
recreational-mathematics
There are two buckets A and B.
August 1st, 2022
recreational-mathematics
algebra-precalculus
Longest distance between 2 points on a cylinder
October 17th, 2020
recreational-mathematics
geometry
Find Volume of a Wineglass - a Slice
August 1st, 2022
recreational-mathematics
Striking off a digit from each of the numbers written in seven rows, while preserving arithmetical operations
February 20th, 2020
puzzle
recreational-mathematics
What is the subset of the letters in the word 'numbers'
August 1st, 2022
recreational-mathematics
Is my solution of this time and distance problem correct or wrong?
August 1st, 2022
contest-math
recreational-mathematics
How to show that a relation is an equivalence relation given a defined relation
August 1st, 2022
contest-math
discrete-mathematics
recreational-mathematics
How can I find the value of y given x using matlab / octave
August 7th, 2020
algebra-precalculus
linear-algebra
octave
matlab
recreational-mathematics
Proving that a regular polygon with infinite sides is a circle by using limits on the formula $\frac{\pi}{n}(n-2)$
May 2nd, 2020
circles
geometry
limits
recreational-mathematics
infinity
Is there a list of the number of sets of consecutive integers that sum to n?
December 11th, 2021
summation
algorithms
recreational-mathematics
Conversion of Excel formula back to written Formula...if possible!
July 27th, 2020
education
algebra-precalculus
recreational-mathematics
Units of Hamming, and Euclidean distance
August 1st, 2022
recreational-mathematics
discrete-mathematics
statistics
Formula for sequences
August 1st, 2022
recreational-mathematics
sequences-and-series
How do you find the altitude in a pyramid? (SAT math question)
August 1st, 2022
recreational-mathematics
geometry
hitting a dart board probability
May 21st, 2020
recreational-mathematics
puzzle
probability
how to prove that $x^2 + y^2 =1$ is injective and surjective depending on the restrictions?
March 11th, 2020
recreational-mathematics
discrete-mathematics
contest-math
How to prove intersections and subsets of sets
August 1st, 2022
contest-math
discrete-mathematics
recreational-mathematics
Is the rotation in 2D done by vector addition, project, or rotation?
March 17th, 2020
linear-algebra
matrices
linear-transformations
recreational-mathematics
self-learning
Calculating the length of tape when it is wound up
February 16th, 2020
recreational-mathematics
geometry
Cut the letter $M$ to obtain $9$ single triangles by drawing $3$ straight lines
August 1st, 2022
recreational-mathematics
geometry
Subtraction of numbers with arbitrary bases
August 1st, 2022
calculator
recreational-mathematics
online-resources
Can this crate have even numbers in all rows and columns?
August 1st, 2022
problem-solving
recreational-mathematics
elementary-number-theory
discrete-mathematics
linear-algebra
Hands of a clock forming certain angles
August 1st, 2022
arithmetic
recreational-mathematics
How to verify method used to solve integral was actually the fastest?
March 28th, 2020
soft-question
contest-math
integration
recreational-mathematics
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