I am actually Tony Palframan. I am 77 and have watched the show from its initial broadcast mainly to see just how quickly my mental faculties are failing. However, in the programme on 26/10/20 there was a mathematical sequence which the team whose question it was failed to get the answer and their opponents got a point for the correct answer even though they had no explanation. The correct rationale supplied was very complicated - mine, to arrive at the correct answer, was much simpler
15 (-5) --> 10 (-4) --> 6 (-3) --> 3
120 (/5) --> 24 (/4) --> 6 (/3) --> 2