Mathematics 0580 · IGCSE · Sequences

Sequences — practice question

(a(i))[1]

What is the next term in the sequence $5, 9, 13, 17, \ldots$?

(a(ii))[1]

What is the next term in the sequence $3, 6, 12, 24, \ldots$?

(b)[2]

Find an expression for the $n$th term of this sequence.

Worked solution & mark scheme

This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: The answer is $21$.

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