Step 1 :

When a single die is thrown the possibility of occurance of scores are $\"\"$ .

Factors of $\"\"$ : $\"\"$ and $\"\"$ .

Since the score not a factor of $\"\"$ , the favourable scores are $\"\"$ .

Number of favourable events $\"\"$ .

Total number of events $\"\"$ .

Probability of that the score is not a factor of $\"\"$ is $\"\"$ .

$\"\"$

Probability of that the score is not a factor of $\"\"$ is $\"\"$ .

Solution :

Probability of that the score is not a factor of $\"\"$ is $\"\"$ .