The sample space is \( S = { a, b, c, d, e, f } \).
The vowels in this sample space are \( { a, e } \), while the consonants are \( { b, c, d, f } \).
- Total number of outcomes in the sample space: 6 (since there are 6 letters).
- Number of consonants: 4 (which are b, c, d, and f).
To find the probability of picking a consonant:
\[ \text{Probability of consonant} = \frac{\text{Number of consonants}}{\text{Total number of outcomes}} = \frac{4}{6} = \frac{2}{3}. \]
So, the probability of picking a consonant is \( \frac{2}{3} \).
The answer is \( \frac{2}{3} \).