Question

2. Consider the sequence 9, 16, 25, 36, 49, ...
.
(ii) Find, in terms of n, a formula for the n term
of the sequence.

(iii) Hence, find the 25" term.​

Answer 1

Answer:

The 1st term is 9, or 3 squared.

The 2nd term is 16, or 4 squared.

The 3rd term is 25, or 5 squared.

Notice a pattern?

The nth term is (n+2) squared.

This means the 8th term is 10 squared or 100.