Today’s offering is for fans of the number 4. It’s a cute puzzle that offers up its solution in an elegant way. There is a number N beginning with 4 such that moving the 4 to the end of it creates a new number that is a quarter of N. In other words N is of the form 4[…], where […] is a sequence of digits, and N ÷ 4 = […]4 HINT. Suppose that N has two digits. If you can’t find a solution, suppose that N has three digits. Repeat until done. I’ll be back at 5pm UK with the solution. PLEASE NO SPOILERS. Instead discuss snouts. Source: Moscow Mathematical Olympiad 1983, via @mathematicsproblems and Kevin Gately I’ve been setting a puzzle here on alternate Mondays since 2015. I’m always on the look-out for great puzzles. If you would like to suggest one, email me.
Jun 8, 2026 → Jun 8, 2026
Today’s offering is for fans of the number 4. It’s a cute puzzle that offers up its solution in an elegant way. There is a number N beginning with 4 such that moving the 4 to the end of it creates a new number that is a quarter of N. In…
Read original at The Guardian →1 updates from 1 source.
Today’s offering is for fans of the number 4. It’s a cute puzzle that offers up its solution in an elegant way. There is a number N beginning with 4 such that moving the 4 to the end of it creates a new number that is a…
Read original at The Guardian →What this story stands on. Tier 0 is a primary record or the subject's own words; higher tiers must be attributed, never stated as bare fact.
Today’s offering is for fans of the number 4. It’s a cute puzzle that offers up its solution in an elegant way. There is a number N beginning with 4 such that moving the 4 to the end of it creates a new number that is a quarter of N. In…
View source →Tier key: T0 = Primary source · T1 = Wire · T2 = Outlet report · T3 = Commentary
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