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Pennod 2
Wyth disgybl disglair sy'n cystadlu mewn pedair tasg, ond dim ond un cystadleuydd clyfar fydd 芒'r cyfle i ateb yr Un Cwestiwn. Eight bright students will compete in four challenging tasks!
Darllediad diwethaf
Gwen 10 Mai 2024
17:30