The nth term of a sequence is given by the formula n^3 + 11n . Find the first four terms of the sequence given by this formula and the first term of the sequence which is bigger than one million. Prove that all terms of the sequence are divisible by 6.
Age 14 to 16 Challenge Level:
Swap the positions of the 2 unit and the 3 unit weights then adjust either of these inwards or outwards until you find a balance.
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