Here's a puzzle I came up with while walking today:
For how many natural numbers $n$ is the number $n(n+1)$ a multiple of $100$?
This is true for infinitely many $n$, so "how many" means something like "one in every hundred $n$", an answer in that sort of form.
There are some brute-forcey ...
Make an equation by using only those numbers and symbols.
I created this puzzle.
Denmark = [1 or 4, 11880, 1, 15, 4.433687003, 4 or 5]
India = [11803, 381024, -1, 23, 0.3706062241, 5]
New Zealand = [8916100448256 or 302875106592253, 43680, -1, 40, 0.2362925527, 1]
Norway = [1 or 4, 13832, 1, 29, 5.609984399,5]
Zimbabwe = [4, 15561, -1, 49, 0.574342...
There are 9 equally sized matchsticks, move 2 to make 3 equal triangles
I saw this crossword type in a book and decided to make one. It's called an around-the-bend because each word goes... around the bend. I have both the board and the clues as a text file, but I have no idea how to put that in the question.
Rules
Each word goes from left to right on its numbered...
If I draw two circles and two triangles on a flat surface, how many bounded regions are created to the maximum?
This is in the spirit of the What is a Word/Phrase™ series started by JLee with a special brand of Phrase™ and Word™ puzzles.
If a word adheres to a certain rule I call it a 21 + 3113 Word™.
Text-only version in CSV form:
"MINUTELY","BACON"
"INFLECTS","TOUGH"
"ZESTFUL","TASTEFUL"
"UTENSIL",...
Each of the letters of the word EDUCATION is assigned a different integer value between 1 and 9, for a total value for the word of 45. With the same value for each of the letters, the total values of the letters in each of the six words below are all different prime numbers. Moreover, the six wor...
