Dara's School of Hard Sums: S1 Ep 5 highlight

Duration: 01:24

David O’Doherty grapples with a pizza puzzle in the fifth episode of Dara O'Briain: School Of Hard Sums.

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Dara's School of Hard Sums: S1 Ep 1 highlight
Dara's School of Hard Sums: S1 Ep 1 highlight

Duration: 01:17

The guest on the first episode is the rather brilliant David O'Doherty

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