PK 2019 Q5
5. A park has five gates. In how many ways can Monica choose a gate to enter the park and a different gate to leave the park?
- A 25
- B 20
- C 16
- D 15
- E 10
Pink Kangaroo 2019, Question 5. © UK Mathematics Trust. Original paper on ukmt.org.uk
Answer: B 20
For each of the 5 ways in, there are 4 ways out, so there are 5 × 4 = 20 ways.
Solution © UK Mathematics Trust, from the PK 2019 solutions.