https://tomrocksmaths.com/2026/05/15/numbers-vs-words-round-20-olf-vs-42/TOM ROCKS MATHSen2026-05-15T17:02:00+00:00Numbers vs. Words Round 20: Olf vs. 42tomrocksmaths, Tom Rocks Maths, pollution, maths, mathematics, tom crawford, unsolved problem, countdown, channel 4, tom rocks maths youtube, tom rocks math, tomrocksmath, oxford mathematician, oxbridge, meaning of life, tom rocks oxford, 42, cambridge mathematician, dr tom, tomrockmaths, tom rocks, sum of cubes, tomrocksmaths youtube, tom rocks youtube, interesting numbers, number trivia, tom rocks cambridge, oxbridge professor, numbers and letters, susie dent, tom rocks countdown, doctor tom, dictionary corner, etymology, lexicographer, numbers versus words, origins of words, numbers v words, numbers vs words, tom rocks Oxbridge, unit for smell, measure of smell, hitchhikers guide to the galaxy, olf, olfactory, olfactus, olfactometer, pollution unit, wet dog smell, smoker smell, sum of cubes problemhttps://tomrocksmaths.com/wp-content/uploads/2026/05/round20-sq.jpg?w=300