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5. Here are the first four terms of an arithmetic sequence. 10 14 18 8un + 17. [2] IQ (a) Write an expression, in terms of n, for the nth term of this sequence. The nth term of a different arithmetic sequence is 3n + 5 (b) Is 108 a term of this sequence? Show how you get your answer. 6. Here are the first six terms of a Fibonacci sequence.
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