GMAT Strategy Number Properties Guide

[joy.calcutta]

Odds,Evens,Positives, Negatives
Q3.If c,d,e are consecutive integers, what is cde?
Answer is Even - I don't get how can it be even. -1,0,1 can be a series of consecutive integers, in this case the answer is 0, however 1,2,3 can also be a series of consecutive integer and the answer is definitely even

Q5.If n, p, q,and r are consecutive integers, what is their sum?
Similarly for this Q, the answer is Even [same explanation provided]
The counteracting series could be -2,-1,0,1,2 - the sum is 0.

Can someone explain the reasoning provided in the book?

[jlucero]

Zero is divisible by all numbers b/c 0 divided by any number has no remainder. Or if you count backwards from any set up multiples, zero is a number:

10, 8, 6, 4, 2, 0
15, 12, 9, 6, 3, 0
28, 21, 14, 7, 0

[JulianaO831]

Zero is divisible by all numbers b/c 0 divided by any number has no remainder. Or if you count backwards from any set up multiples, zero is a number:

10, 8, 6, 4, 2, 0
15, 12, 9, 6, 3, 0
28, 21, 14, 7, 0

I have the same question. Why wouldn't the answer be "cannot determined" if 0 is an integer and could be equal to anyone of the variables in questions 3 and 5?

[RonPurewal]

0 is an even number.

you can pretty much rest assured that this kind of thing isn't going to matter on your official test, though. i wrote about this here: https://www.manhattanprep.com/gmat/foru ... ml#p116154