In your 1st July 2005 edition, Robin Campbell, QS (retired) fondly remembered the jingle he had learned as a boy for remembering his trigonometry formulae.

I, also as a boy, in the early 1980s was taught that 鈥(S)ome (O)ld (H)ulks (C)arry (A) (H)uge (T)ub (O)f (A)le鈥 and I can tell you that silly and all it may sound, I have never forgotten my formulae.

Please keep up the trivia questions and problems 鈥 they give us some light amusement in quite a demanding environment.

Dominic Lavery, contractor鈥檚 QS, Belfast