Question

Here are the first five numbers in a sequence.

47 41
(a) Find the first negative number in the sequence.
35
29
23

Answer 1

- 1

Explanation:

note there is a common difference of 6 between consecutive terms , that is

23 - 29 = 29 - 35 = 35 - 41 = 41 - 47 = - 6

by subtracting 6 from the previous term we get

23 - 6 = 17

17 - 6 = 11

11 - 6 = 5

5 - 6 = - 1

the first negative number in the sequence is - 1