The first four terms of a sequence are $-4, - 1, 2, 5, \dots$. Write down the next term in the seq

Question

The first four terms of a sequence are $-4, - 1, 2, 5, \dots$. Write down the next term in the sequence. [1] Write down an expression for the $n^{\mathrm{th}}$ term. [2] Hence, find the $25^{\mathrm{th}}$ term in the sequence. [1] Explain why $255$ is not a term of the sequence. [2]

Accepted Answer

(a) $8$. (b) $T_n=3n-7$. (c) $68$. (d) No: $262/3$ is not an integer.

2022 EOY CSS P1 Q10

2022 EOY CSS P1 Q10

Solution:

Solution locked