Pair Sums

Five numbers added together in pairs produce: 0, 2, 4, 4, 6, 8, 9, 11, 13, 15 What are the five numbers?

Weekly Problem 16 - 2012

Weekly Problem 16 - 2012

Weekly Problem 47 - 2013

Weekly Problem 47 - 2013

Weekly Problem 17 - 2008

Stage: 3 and 4 Challenge Level:

If p is a positive integer and q is a negative integer, which of the following is the greatest?

A. $p-q$
B. $q-p$
C. $p+q$
D. $-p-q$