Final answer:
The probability of all 't's occurring together in the word 'attraction' is 1/9 or approximately 0.111.
Step-by-step explanation:
To find the probability of all 't's occurring together in the word 'attraction', we need to determine the total number of possible arrangements of the letters. The word 'attraction' has 10 letters in total, with 2 't's. So, there are (10 - 2 + 1) = 9 possible positions where the 't's can occur together as a group. Now, out of the 9 possible positions, there is only 1 position where the 't's actually occur together. Therefore, the probability of all 't's occurring together is 1/9, or approximately 0.111.