Or search by topic
If you can copy a network
without lifting your pen off the paper
without drawing any line twice
then it is traversable.
Decide which of these diagrams are traversable.
If you end up where you started when you draw a traversable diagram it is called a traversing circuit .
If you don't end up where you started when you draw a traversable diagram it is called a traversing path.
Can you give a set of criteria for determining whether a diagram is traversable by a path or a circuit or neither?
Make a set of numbers that use all the digits from 1 to 9, once and once only. Add them up. The result is divisible by 9. Add each of the digits in the new number. What is their sum? Now try some other possibilities for yourself!
15 = 7 + 8 and 10 = 1 + 2 + 3 + 4. Can you say which numbers can be expressed as the sum of two or more consecutive integers?