Primary Mathematics Challenge - 2022 - 12 | Exact Science

12

In this car park problem, cars can only go forwards and backwards. What is the smallest number of cars that I have to move before I can drive my car straight out of the car park?

A. 3

B. 4

C. 5

D. 6

E. 7

Answer

C. 5

SOLUTIOn

Move cars A and B to the left. Move car Cup to the car park edge. Move car D to the left, and car E down.

You can now drive your car out of the car park!

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