by Graham Smithers
Published 7th June 2015
On her birthday this year my grandmother told me that on each birthday she writes down her age together with the day’s date in eight digit form (dd/mm/yyyy).
She said that twice during her life this had involved using each of the digits 0 to 9 exactly once, the first such occasion being in 1974..
What is her date of birth in eight-digit form?