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Recreational-mathematics
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What is the significance of the mirror numbers?
August 1st, 2022
recreational-mathematics
geometry
relations
Formula to calculate fastest minute of a horse race
August 1st, 2022
recreational-mathematics
Choosing a $k$ person committee with chairperson from a group of $n$ people confusion
March 2nd, 2020
proof-writing
combinatorics
combinations
recreational-mathematics
proof-verification
How do you solve "sum of ages" puzzles?
August 1st, 2022
recreational-mathematics
The fly flying between two trains
August 1st, 2022
recreational-mathematics
Relative speed of minute hand in a clock
August 1st, 2022
recreational-mathematics
arithmetic
geometry
Triangle whose height and sides are consecutive integers
September 13th, 2020
geometry
puzzle
recreational-mathematics
Moving last digit to first
May 1st, 2020
elementary-number-theory
recreational-mathematics
Among these figures circle, square, rectangle, isosceles triangle which has the greatest perimeter had the same area?
October 27th, 2020
recreational-mathematics
geometry
discrete-mathematics
3 girls and 4 boys were standing in a circle . What is the probability that two girls are together but one is not with them?
December 3rd, 2020
combinatorics
recreational-mathematics
How many numbers between 1 and 150 contain the digit '1' in their base 10 representation?
December 27th, 2020
recreational-mathematics
puzzle
Maximum number of regions in which the plane can be split using $n$ lines.
November 16th, 2020
induction
geometry
recreational-mathematics
contest-math
3 Knights and Knaves
October 23rd, 2020
logic
recreational-mathematics
The famous Portia's casket problem
April 30th, 2020
recreational-mathematics
logic
puzzle
Can we prove that plumb line is vertical to ground?
August 1st, 2022
experimental-mathematics
geometric-construction
math-history
recreational-mathematics
geometry
What is the formula for generating an increasing sequence of odd numbers in which each number appears two consecutive times?
August 1st, 2022
recreational-mathematics
sequences-and-series
Arranging identical balls in a circle
January 30th, 2020
circles
recreational-mathematics
contest-math
combinatorics
How to arrange a pile of coins into two piles such that both piles have equal number of heads up?
August 22nd, 2020
puzzle
recreational-mathematics
Find 7 digit prime numbers with this property;
September 5th, 2020
puzzle
prime-numbers
recreational-mathematics
If I have 10 different pairs of socks and have washed 10 socks, what are the chances that none will match?
June 18th, 2020
recreational-mathematics
probability
combinatorics
binomial-coefficients
Why is $111111111 \times 111111111 = 12345678987654321$
August 1st, 2022
recreational-mathematics
arithmetic
Solving the 24 Game for 5, 5, 5 and 1
August 2nd, 2022
recreational-mathematics
Concept of Probability in math first level
June 19th, 2020
probability
conditional-probability
problem-solving
normal-distribution
recreational-mathematics
how to calculate vehicle speed using mathematics and Image processing?
August 1st, 2022
discrete-mathematics
estimation-theory
image-processing
recreational-mathematics
physics
Rotation schedule for 6 persons and 2 locations
August 5th, 2022
recreational-mathematics
What is the minimum number of moves of solve the puzzle?
August 1st, 2022
puzzle
combinatorics
algorithms
recreational-mathematics
Find Differences between Ages of A and B.
May 3rd, 2020
puzzle
recreational-mathematics
The 100 Coins Puzzle
July 9th, 2020
puzzle
recreational-mathematics
discrete-mathematics
Solve Spherical Shell for Radius given Thickness and Volume
April 29th, 2020
geometry
recreational-mathematics
A simple Question. How much "faster" is A than B as a percentage figure?
September 9th, 2020
ratio
percentages
recreational-mathematics
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