Friday, January 11, 2008

Problem Solving - 32

List K consists of 12 consecutive integers, if -4 is the least integer in list K, what is the range of the positive integers in the list K?

A. 5
B. 6
C. 7
D. 11
E. 12

Answer: B

The least number in the list is -4, thus the list is: -4,-3,-2,-1, 0, 1, 2, 3, 4, 5, 6, 7
Positive integers in the above list: 1, 2, 3, 4, 5, 6, 7
Therefore the range of the positive integers is 7-1 = 6