Saturday Math Puzzle #Croydon

“Instead of worrying about what you cannot control, shift your energy to what you can create.” – Roy T. Bennett, The Light in the Heart

5 – 80 – 77 = 15
6 – 90 – 88 = 12
7 – 70 – 67 = 21
8 – 60 – 48 = ?

Croydon, the view from my window

The UK’s first major international airport was located in Croydon. The first fledging airlines ran flights from here in the 1920s, and Croydon to Paris quickly became the world’s busiest air route. Just before the outbreak of the Second World War, Croydon was flying up to 1,500 passengers a day from its airport. After the war, the role of London’s international airport passed to Heathrow as Croydon had no further room to expand and the airport closed on 30 September 1959.

As the vast majority of place names in the area are of Anglo-Saxon origin, the theory accepted by most philologists is that the name Croydon comes from the Anglo-Saxon croh, meaning “crocus”, and denu, “valley”, indicating that, like Saffron Walden in Essex, it was a centre for the cultivation of saffron. It has been argued that this cultivation is likely to have taken place in the Roman period, when the saffron crocus would have been grown to supply the London market, most probably for medicinal purposes, and particularly for the treatment of granulation of the eyelids.

There is also a plausible Brittonic origin for Croydon in the form “Crai-din” meaning “settlement near fresh water”, the name Crai being found in Kent at various places even as late as the Domesday Book.

Alternative, yet less probable, theories of the name’s origin have been proposed. According to John Corbet Anderson: “The earliest mention of Croydon is in the joint will of Beorhtric and Aelfswth, dated about the year 962. In this Anglo-Saxon document the name is spelt Crogdaene. Crog was, and still is, the Norse or Danish word for crooked, which is expressed in Anglo-Saxon by crumb, a totally different word. From the Danish came our crook and crooked. This term accurately describes the locality; it is a crooked or winding valley, in reference to the valley that runs in an oblique and serpentine course from Godstone to Croydon.” Anderson challenged a claim, originally made by Andrew Coltee Ducarel, that the name came from the Old French for “chalk hill”, because it was in use at least a century before the French language would have been commonly used following the Norman conquest. However, there was no long-term Danish occupation in Surrey, which was part of Wessex, and Danish-derived nomenclature is also highly unlikely. More recently, David Bird has speculated that the name might derive from a personal name, Crocus: he suggests a family connection with the documented Chrocus, king of the Alemanni, who allegedly played a part in the proclamation of Constantine as emperor at York in AD 306.

3 thoughts on “Saturday Math Puzzle #Croydon

    1. Corect! Multumesc mult, draga Potecuta, pentru acceptarea jocului! Am revenit cu un cont nou in WordPress, ca prea se incalcisera setarile in cel vechi.
      O zi frumoasa si un weekend plin de bucurii! Imbratisari de suflet! 😘❤️


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