a) Let 0-6 stand for a score and 7-9 stand for a miss. This means 7 numbers that mean score and 3 numbers that mean miss, which gives it a 70% chance. Take 6 of the digits for each of the 5 simulations.
189741- 3 scores
586463- 5 scores
856648- 4 scores
770615- 4 scores
645468- 5 scores