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Even Odd Prime Square Over 6 Under 7 Triangular Factors of 12 Multiples of 3

The Christmas Toggle Tree has a set of twelve lights which are operated by the buttons above using the toggle principle. For example the 'Even' button changes the state of every even light on the tree. Even lights that are on go off and those that were off come on!

Your challenge is to light up all the lights of the tree by pressing the correct buttons.

There are solutions to each level of this puzzle showing the most efficient ways of lighting up the tree but they are only available to those who have a Transum Subscription.

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