To find the probability of selecting a vowel letter from the word "MODELS," we first need to identify the vowels in the word. The vowels in "MODELS" are:
- O
- E
So, there are 2 vowels (O and E) out of a total of 6 letters (M, O, D, E, L, S).
Now, using the formula for probability:
\[ \text{Probability} = \frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}} \]
we have:
\[ \text{Probability of selecting a vowel} = \frac{2}{6} = \frac{1}{3} \]
Therefore, the probability of selecting a vowel letter from the word "MODELS" is:
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