Problem Solving

harrybm wrote:143) List k consists of 12 consecutive integers. If -4 is the least integer in list K, what is the range of positive integers in list K?
a. 5
b. 6
c. 7
d. 11
e. 12


I answer 7, but its wrong. here is my explanation

set of 12 intergers = (-4, -3, -2, -1, 0 , 1, 2, 3, 4, 5, 6, 7)
Range (widest distance) = 7 - 0 = 7

Can someone help whats wrong with my reasoning?

Consecutive integers are integers that follow each other in order. They have a difference of 1 between every two numbers. So, the list k = {-4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7}

Now we have to find the range of positive integers and range is the difference between the highest and lowest integers.
Here positive integers are 1, 2, 3, 4, 5, 6, 7. Note that 0 is not a positive integer.
So, the range of positive integers = 7 - 1 = 6

The correct answer is B.