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secondary 4 | E Maths
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(c) This is a sequence of cubes. E.g. 27 is 3 raised to the power of 3. The nth term is nth cube.
(d) This is a sequence formed from the one in (c). That is, 1+(1) =2, 8+(2)=10, 27+(3)=30, 64+(4). So, the nth term is nth cube + n.
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