 this is a mathematical snack from the association of teachers of mathematics. We're going to use some playing cards and i'm just going to use the numbers ace up to nine or one two three four five six seven eight nine from those i'm going to choose just three of them so i'm going to choose the two the three and the seven. The first thing i want you to do is just to add those three numbers dweud, 7-3 is 10, 2 makes 12. So, I just want you to store that answer of 12 from the sum of those the three cards that I've chosen right and now going to choose pairs of numbers from those three and make new numbers so I'm going to make 32 or I can make 23 I can make 37 ac rydyn ni'n mynd i ffrwng 3 nôl o ddwg diwethaf ar gyfer nôl. ac dyna os ychydig sy'n gofio'n ddawol, ddyn ni'n ddysgu ddwg diwethaf ar gyfer nôl sefydlu'n ddod fel un. ac ni'n gweddwch eich gweld â'u gweld. Ac nid diwyllwch chi ddewid â'u gweld â'u gweld ar y rydyn sy'n gweinig ag orio'r ddwg diwethaf ar gwybio'r gweld. a'i gofio'n gwel.