i'm confused because my prep book is saying factors and multiples of any number MUST be positive. yet there's a sample question in my prep book that contradicts that rule.
What is the sum of the numbers in a list of m even integers?
(1) the largest integer on the list is 12
(2) the list consists of 6 consecutive multiples of 4.
the answer from the book is C because the list must be {-8,-4,0,4,8,12}.
in my head, i thought multiples must be positive since that's what i've been told.
so how is it that -8 and -4 are multiples of 4?
What is the sum of the numbers in a list of m even integers?
(1) the largest integer on the list is 12
(2) the list consists of 6 consecutive multiples of 4.
the answer from the book is C because the list must be {-8,-4,0,4,8,12}.
in my head, i thought multiples must be positive since that's what i've been told.
so how is it that -8 and -4 are multiples of 4?
