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Answer:
[tex]\frac{1}{2}[/tex] is your answer
Step-by-step explanation:
To calculate the probability, you first have to find the total things by adding.
13 + 13 = 26
Then, you find the number of purple marbles which is 13. So, 13 is the numerator, and 26 the denominator.
[tex]\frac{13}{26}[/tex]
Next, simplify.
[tex]\frac{13}{26} = \frac{1}{2}[/tex]
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