Question

Which describes the sequence 1,4,9,16,25,...?

A. arithmetic only
B. geometric only
C. both arithmetic and geometric
D. neither arithmetic nor geometric

Answer 1

What are these types of numbers; 1, 4, 9, 16, 25, 36, 49, 64, 81, and 100?

What are these types of numbers; 1, 4, 9, 16, 25, 36, 49, 64, 81, and 100?

They are consecutive perfect squares. They are also consecutive sums of numbers with odd parity.

Firstly, consecutive perfect squares.

1²=1

2²=4

3²=9

4²=16

5²=25

6²=36

the answer is A