Mae'n amser i wneud hwyl mathemateg ac enghreifftiau poreshat o gyflymder ac amser. A gynigir i chi yn enghraifft o wahanol gymhlethdod a phedwar ateb posibl a geir yn eu plith a dewis y dde. Ceisiwch i sgorio cymaint o bwyntiau i fod y cyntaf ar yr arweinwyr.
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