Dear All, Is 0 belongs to the set of positive integers?

Question

Dear All,

Is 0 belongs to the set of positive integers?

regards,

Amardeep

Fig · Answer

No.

It is not as it not a negaitve number.

Juaz · Answer

IMO "0" is neither +ve nor -ve, but it is an even integer.

Amardeep Sharma · Answer

Try the below mentioned DS question.

Q) if both f and g are integers is fg+2 is a prime number?

1) f is odd

2) g is even

options a,b,c,d, or e

regards,

Amardeep

Amardeep Sharma · Answer

Thnx Juaz,

You gave a good insight, this resolves my confusion.

So 0 is even, non-negative, non-positive, integer.

regards,

Amardeep

Summer3 · Answer

Is the answer B? I mean B is SUFF alone.

What is the OA, Amardeep?

vshaunak@gmail.com · Answer

Statement 1 :
 f is odd==> g may be 0, odd, even(except 0)
for g = 0, fg+2 = 2 which is prime 
for g = odd, fg will be odd===> fg+2 will be even which is not prime
Hence INSUFF

Statement2: 
g is even. possible values of g = 0, 2 ,4, 6 
possible values of f = 0, even number (except 0), odd
for f = 0, fg = 0, fg+2 = 2 Prime number
for f = odd, fg will be even, fg+2 will also be even so not prime
for f = even, fg will be even , fg+2 be even so not prime 
hence INSUFF

Taken them together

f is odd, g is even
g may be 0 as 0 is an even integer
for g =0, fg+2 will be 2 Prime number 
for g != 0, fg+2 will be even not a prime number 
Hence INSUFF

Answer is 'E'

Amardeep, what is 'OA'

ywilfred · Answer

Just to put things straight since this comes up often:

Properties of 0:

- 0 is neither positive or negative
- 0 is considered part of an even set of integers (OG says it, so at least this set is valid for the GMAT)
- 0! = 1

seofah · Answer

I am for "E" , as well!!!

StartupAddict · Answer

I was going to say B, as fg+2 is always even if g is even, but f=0 makes it be 2 so yeah E).

Amardeep Sharma · Answer

I am sorry guys for late reply... OA is E

key is to consider 0 as an even but non-positive and non-negative number.

regards,

Amardeep

Dear All, Is 0 belongs to the set of positive integers?

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