If a and b are positive integers, is the product ab odd?

Question

(1) b = 3
(2) a and b are consecutive integers.

0akshay0 · Answer

St I b = 3 if a is Odd then ab will be Odd if a is Even then ab will be Even ---------Insufficient St II a and b are consecutive integers Since the value of ab will always be Even ---------- Sufficient Hence option B is correct Hit Kudos if you liked it 8-)

eddy8700 · Answer

If a and b are positive integers, is the product ab odd?

(1) b = 3
(2) a and b are consecutive integers.

B is suffcient

for any 2 consecutive integers. one will always be even

RR88 · Answer

Option B

I: b =3. No information about a. Insuff.

II: Product of consecutive integers is always Even. Suff.

matthewsmith_89 · Answer

1 is insufficient because we do not know the value of a 2 is sufficient because consecutive integers are always even Answer is B :-D

Animatzer · Answer

Lets take statement 1)
 b=3 then if a is even then ab=even
 if a is odd then ab=odd
 therefore, this statement is not sufficient.

Now 2) the product of consecutive integers is always even (eg: 2x3,3x4,4x5) etc..

Therefore B is the right answer.

LeoN88 · Answer

#1, If a=3 ab=odd;
If a=2, ab=even. Insufficient.

#2 product of any two consecutive +ve integers has to be even. So ab not odd. Sufficient  B

bumpbot · Answer

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If a and b are positive integers, is the product ab odd?

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GMAT Data Sufficiency (DS) Questions

If a and b are positive integers, is the product ab odd?

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