Mathematics 0580 · IGCSE · Sequences

Sequences — practice question

(a)[2]

Find a rule for the $n$th term of the sequence $11,\;7,\;3,\;-1,\;\ldots$.

(b)[2]

Find a rule for the $n$th term of the sequence $3,\;6,\;12,\;24,\;\ldots$.

Worked solution & mark scheme

This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The required expression is $15-4n$.” …

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