To find the probability of drawing a green token first, we need to determine the total number of tokens and the number of green tokens.
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Total number of tokens:
- Blue tokens: 10
- Green tokens: 8
- Red tokens: 12
Total = 10 + 8 + 12 = 30 tokens.
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Number of green tokens: 8
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Probability of drawing a green token first: \[ P(\text{Green}) = \frac{\text{Number of Green Tokens}}{\text{Total Number of Tokens}} = \frac{8}{30} = \frac{4}{15} \]
The probability of drawing a green token first is \( \frac{4}{15} \).
Thus, the correct response is \( \frac{4}{15} \).