In my maths book i have a question that states: 'two tetrahedral (four sided) dice, each numbered 1, 2, 3 and 4, are rolled together. use a sample space diagram to show all the possible totals when the numbers are added.' i'm confused about the (four sided) but and the numbered 1, 2, 3, 4 bit. what am i exactly meant to do?

Asix-sided die of unknown bias is rolled 20 times, and the number 3 comes up 6 times. in the next three rounds (the die is rolled 20 times in each round), the number 3 comes up 6 times, 5 times, and 7 times. the experimental probability of rolling a 3 is 10 %, which is approximately % more than its theoretical probability. (round off your answers to the nearest integer.)