Final answer:
The probability of grabbing an 'M' from a bag full of letters spelling SUMMER is 1/6.
Step-by-step explanation:
To find the probability of grabbing an 'M' from a bag full of letters spelling SUMMER, we need to determine the number of outcomes in which an 'M' can be selected and divide it by the total number of possible outcomes. In this case, there is only 1 'M' in the bag, so the number of outcomes in which an 'M' can be selected is 1. The total number of possible outcomes is the number of letters in the bag, which is 6. Therefore, the probability of grabbing an 'M' is 1/6.