Suggest an edit09:35Square Two: 24: The Inverse MatrixBBC One Sat 7th Nov 1970, 09:35 on BBC One LondonA second start in mathematics(For publication see page 15)ContributorsDevised by:Alan TammadgeDevised by:Leslie WilliamsDirector:Michael LumleyProducer:David Roseveare Source: Radio Times Suggest an edit