GCSE Maths Practice: conditional-probability

Question 4 of 10

This question shows conditional probability when excluding a specific color.

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\( \begin{array}{l}\text{A bag contains 6 red, 4 blue, and 5 green marbles.} \\ \text{One marble is selected at random.} \\ \text{What is the probability it is red, given that it is not green?}\end{array} \)

Choose one option:

\( \frac{3}{5} \) \( \frac{6}{10} \) \( \frac{4}{10} \)

Count remaining items that satisfy the condition, then compute the fraction.

Remove the excluded color from the sample space and count the remaining items for probability.