Answer:
25/216 or 0.115740741
Step-by-step explanation:
These are the possibilities of getting a sum of 9: 126 135 144 153 162 216 225 234 243 252 261 315 324 333 342 351 414 423 432 441 513 522 531 612 621 (Total of 25)
The total: 6*6*6= 216
25/216=0.115740741