Question

How many numbers are in the list 433, 429, 425, .... -103, -107?

The negative really confuses me

Answer 1

135

Explanation:

You can add the number which are in negative o

as well

The number is in descending order by 4.

Then add the first and last number i.e.

433+107===> 540

divide 540 by 4

540/4

= 135