Problem:
In a game of Scrabble™, how many distinct sets of 7 tiles are worth 46 points?
This puzzle is the third of its kind from Matt Parker's Maths Puzzles.
Chris Milson-Tokunaga chrismilson
This is based on Matt Parker's Youtube Video
The card flip game is played by two players.
The first player will place n (usually four) cards face down in a row and then
flip some of the cards face up.
The second player will now attempt to flip individual cards in order to make all
This problem is from the series of Matt Parker's Maths Puzzles and the video
A bank is offering a promotion! Patrons are able to open an account and make a single deposit on the first and second days. Each day the account earns the previous day's balance in interest. The bank stipulates that if the account ever holds exaclty one million pounds then the account holder will be able to withdraw the one million pounds. In order to reduce risk the bank adds a clause
I am currently an English teacher at some schools in Japan and recently my students have been learning how to write the numbers in words in English. For example, if they were given the number 12 they are learning to write 'twelve'.
One of the questions I set the students was to find the number with the longest length (in characters; 4 would be bigger than 10 because four has more
This puzzle is part of the Matt Parker's Maths Puzzles series.
Given a piece of paper with eight marked out regions:
_______________
| | | | |
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| class Board: | |
| def __init__(self, n): | |
| self.n = n | |
| self.tiles = [x[:] for x in [[' '] * n] * n] | |
| def __getitem__(self, point): | |
| return self.tiles[point.x][point.y] | |
| def __setitem__(self, point, value): | |
| self.tiles[point.x][point.y] = value |
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| from random import random | |
| def countBits(num): | |
| result = 0 | |
| while num: | |
| result += 1 | |
| num &= num - 1 | |
| return result | |
| def likelihood(probability): |
This puzzle is the eleventh puzzle from the Matt Parker's Maths Puzzles series.
David and Anton's ages combined equals 65. David is currently three times as old as Anton was when David was half as old as Anton will be when Anton is three times as old as David was when David was three times as old as Anton.
How old is David?
When I was younger i had a great friend, Little Johnny. He was a very good boy. He woke up every morning at six sharp and promptly had a shower, ate his breakfast, and brushed his teeth before either leaving for school, or starting a shift in his mother's bakery on the weekends.
On one particular day at school the teacher annouced that we were going to have no more than two weeks to write speeches, which we would then have to present in front of the rest of the class. Johnny was stumped. He had absolutely
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