I trust that the young people saying “six-seven” (Pass notes, 20 October) realise that the product of those two numbers is 42, which, according to Douglas Adams’ The Hitchhiker’s Guide to the Galaxy, is “the Answer to the Ultimate Question of Life, the Universe and Everything”. It’s what we old people say.
Toby Wood
Peterborough

My 13-year-old granddaughter, Sophia, confirms that randomly yelling “Six-sevvuhnn!” is trending at her school. This sort of thing is nothing new: when her mother was at school, the fashionable standard greeting between teenage boys was “Whassup?”.
Mark Newbury
Farndale, Yorkshire

“Prince” Andrew still reflects unearned privilege (Prince Andrew gives up royal titles including Duke of York after ‘discussion with king’, 17 October). Then it came to me: he should be referred to as “Andrew, formerly known as Prince”.
Ian Hutchison
London

Surely it’s obvious how many US states Donald Trump would give up to negotiate peace after a Russian invasion (Letters, 20 October). All those that didn’t vote for him.
Jim Hatley
Brighton

I was amused that a bloke called Heavisides should be endorsing pilates (Letters, 19 October). But I can assure him that plenty of chaps attend the pilates studio where I and my 94-year-old husband go weekly.
Maggie Butcher
London

Can you lower your blood pressure (The blood pressure secret: everything you need to know to improve yours – and live a longer, healthier life, 19 October)? Not if you read the Guardian first!
Michael Fuller
Ampthill, Bedfordshire

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