O-LevelMathematicsAlgebra and graphs4024/12 · Oct/Nov 2016 · Q264 Marks
Two sequences have 1, 3, 5 as their first three terms.
- (a)(i)In the first sequence, each term is 2 more than the term before it. Find an expression, in terms of n, for the nth term.[1]
- (a)(ii)The kth term of this sequence is 841. Find the value of k.[1]
- (b)(i)The nth term of the second sequence is (2n-1) - ((n-1)(n-4))/2 Find the fourth term of this sequence.[1]
- (b)(ii)Find the fifth term of this sequence.[1]
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2016). The mark or mark type is shown in brackets.
- [1] (a) (i) 2n-1 oe
- [1] (a) (ii) 421
- [1] (b) (i) 8
- [1] (b) (ii) 14
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