GCSE Maths Practice: conditional-probability

Question 2 of 13

This question shows independent events in probability. Replacement keeps the sample space constant.

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\( \begin{array}{l}\text{A bag contains 10 balls: 6 red and 4 blue.} \\ \text{One ball is drawn at random and then replaced.} \\ \text{What is the probability of drawing a red ball on the second draw, given that the first draw was red?}\end{array} \)

Choose one option:

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

Check if the problem mentions replacement. If so, the events are independent.

When an item is replaced, the probability for the second draw is the same as the first. Conditional probability does not change.