Here are the first four terms of an arithmetic sequence.
k,k+7,k+14,k+21k, k+7, k+14, k+21k,k+7,k+14,k+21
Write down an expression, in terms of n n\,n and kkk, for the n n\,nth term of the sequence.
208 exam-style questions on OCR GCSE Maths Sequences (Nth Term). Each one has a worked solution and a mark scheme showing where the marks go.