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Satnav Dilemma
Age 11 to 14
ShortChallenge Level 
There are 3 routes from S to U and 2 from U to V. The number of different routes from S to T is therefore 3 x 2 =6. Each of these can be followed by any one of three different routes from V to T, making a total of 6 x 3 = 18 routes in all.
This problem is taken from the UKMT Mathematical Challenges.
You can find more short problems, arranged by curriculum topic, in our short problems collection.
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