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All for naught

Following your review of BBC Megamaths, (TES, October 11), I must point out the error in the statement, "odd numbers multiplied by 10 always end in 5". The BBC may from time to time get the units wrong, but I can assure you that we are more than aware of how the zeros work!

JULIE COGILL Chief education officer School Programmes, BBC Wood Lane, London W12

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