Arithmetic Sequence

This item is taken from IGCSE Mathematics (0580) Paper 32 of May/June 2013.

To deal with this item, let us summarize the details of the problem:
   (a) Syllabus area: Algebra
   (b) Specific topic: Arithmetic Sequence
   (c) Formula Needed:

Let us identify first the given and details of the sequence. Let us start with the first term and the common difference of the sequence. The common difference is the result of subtracting any consecutive term of the sequence.

Using the first term and the common difference,

Another method (shortcut method) could be used to check at an instant the nth term of the sequence.

Therefore, the nth term of the arithmetic sequence is 4n + 3.

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