Transum Mathematics Puzzles

John Tranter

This Transum podcast features a puzzle of the month as well as information about everything new on Transum Mathematics. Look for the latest episode of the podcast in the iTunes Store

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141 episodes
Updated Saturday

Episodes141

Newest first

Dec 1, 2019 · 7 min
Noel in Lapland
Work out the length of Noel's trip to Lapland given the details of the weather conditions.
Nov 1, 2019 · 12 min
Multiple Remainders
Find the second smallest number that satisfies the given conditions about remainders.
Oct 1, 2019 · 13 min
Coaches to Cambridge
Figure out which coach I was sitting in when I travelled by train to Cambridge last summer.
Sep 1, 2019 · 9 min
Percy Cod's Kids
How old are Percy's children given the ratio of their ages now and in ten years' time?
Aug 1, 2019 · 10 min
Carrot-Eating Critters
How many of each type of animal shared the 20 carrots?
Jul 1, 2019 · 10 min
Arrow in Square
What fraction of the square does the arrow cover?
Jun 1, 2019 · 14 min
Puzzles, Riddles and Conundrums
A puzzle (or riddle) about Percy who seems to age very quickly from 13 to 16.
May 1, 2019 · 10 min
Monkeys, Kittens and Dogs
A riddle about the person most likely to be able to work out the square root of 121.
Apr 1, 2019 · 10 min
Feed the Horses
Calculate the number of days worth of horse feed that are left for Obadiah Sloop.
Mar 1, 2019 · 13 min
Radio Riddle
Solve the riddle heard on the radio involving modular arithmetic.
Feb 1, 2019 · 12 min
Prime Permutations
Of all the permutations of 1 to 9 used to make nine-digit numbers, how many are prime?
Jan 1, 2019 · 9 min
4-Digit Hotel Room Safe Code
Can you work out what number I used to lock and unlock my hotel room safe?
Nov 30, 2018 · 8 min
Choir Eye Colour
Figure out the percentage of choir members that do not have blue eyes from the clues given.
Nov 1, 2018 · 10 min
Calculator Keys at the Corners of a Rectangle
What do the four digit numbers typed into a calculator using four keys at the corners of a rectangle have in common?
Oct 1, 2018 · 8 min
Average House Numbers
Work out the house numbers from the clues about the mean, median and mode.
Sep 1, 2018 · 11 min
Clock in the Mirror
What time was the clock in the mirror really showing?
Jul 30, 2018 · 7 min
Delightfully Divisible
Find a pandigital number that is delightfully divisible.
Jul 1, 2018 · 5 min
Five integers with a product of 12
Can you find five integers that multiply together to give twelve?
Jun 1, 2018 · 8 min
Square in a Rectangle
What is the largest square that can be drawn in the corner of a 10cm by 15cm rectangle that does not cross the diagonal of the rectangle?
May 1, 2018 · 18 min
London Marathon
A question about the average speed required for the second half of the marathon.