Number Properties, 3rd edition, Easy Practice QS, p. 162

[mia.eigo]

Task 8 says: The set of S consists of 4 consecutive integeers. The second term in the set is n

A
The average value of the integers in set S

B
n + 1/2

The answer says A is equal to B. My question is, is it true for negative numbers as well?

[tommywallach]

Hey Mia,

Did you try it? Or did you really post here without trying it? That is not the GRE mindset!

Set S: -2, -1, 0, 1
average = -.5
n = -1
n + 1/2 = -.5

Set S: -4, -3, -2, -1
average = -2.5
n = -3
n + 1/2 = -2.5

Always test stuff out yourself!

-t