Question
(a) Here are the fi rst four terms of a sequence.
27 23 19 15
(i) Write down the next term in the sequence.
(ii) Explain how you worked out your answer to part (a)(i).
(b) The nth term of a different sequence is 4n – 2 .
Write down the fi rst three terms of this sequence.
(c) Here are the fi rst four terms of another sequence.
–1 2 5 8
Write down the nth term of this sequence.
Answer/Explanation
Ans:
(a) (i) 11
(ii) subtract 4 oe
(b) 2, 6 , 10 cao
(c) 3n – 4 oe
Question
These are the first five terms in a sequence.
8 11 14 17 20
(a) Find the next term.
………………………………………….
(b) Find an expression for the nth term.
………………………………………..
Answer/Explanation
(a)23
(b)3n+5
Question
The nth term of a sequence is 5n – 3.
Write down the first three terms of the sequence.
Answer/Explanation
2 7 12
Question
These are the first four terms of a sequence.
5 8 11 14
(a) Write down the next term.[1]
(b) Find an expression, in terms of n, for the nth term.[2]
Answer/Explanation
Ans:
16(a) 17
16(b) 3n + 2 oe final answer