Tim Gan Math
Sign up free

Probability

Probability

IP 4

A bag contains \(2\) red and \(3\) blue counters. A counter is drawn, replaced, and the bag mixed. A second counter is then drawn.

  1. Copy the tree above and label all branch probabilities.

  2. Find the probability of two red counters.

  3. Find the probability of exactly one red counter.

  4. Find the probability of at least one red counter.

Solution:

Solution locked

680+ questions here come with free worked solutions. A free account saves your questions and progress; this one needs tuition enrolment.

Create free accountSign inIP Math tuition

Create a free account to practise similar questions.

Create free accountSign inIP Math tuition
Answer:(a) Every draw: \(R=\frac25,B=\frac35;\) (b) \(\frac4{25}; \) (c) \( \frac{12}{25};\) (d) \(\frac{16}{25}\).

Need help? Join our IP Math tuition programme.

Learn more