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If t is the sum of three consecutive positive integers, is t a

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If t is the sum of three consecutive positive integers, is t a  [#permalink]

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New post 22 Dec 2015, 03:30
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Re: If t is the sum of three consecutive positive integers, is t a  [#permalink]

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New post 22 Dec 2015, 03:57
Bunuel wrote:
If t is the sum of three consecutive positive integers, is t a multiple of 24?

(1) The smallest of the 3 integers is even.
(2) t is a multiple of 3.


Hi Bunuel,
although this too can be a question but looking at t as a multiple of 24, I am sure you meant product and not sum of three consecutive positive integers
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Re: If t is the sum of three consecutive positive integers, is t a  [#permalink]

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New post 22 Dec 2015, 03:58
chetan2u wrote:
Bunuel wrote:
If t is the sum of three consecutive positive integers, is t a multiple of 24?

(1) The smallest of the 3 integers is even.
(2) t is a multiple of 3.


Hi Bunuel,
although this too can be a question but looking at t as a multiple of 24, I am sure you meant product and not sum of three consecutive positive integers


The question in the source says "sum", not "product".
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Re: If t is the sum of three consecutive positive integers, is t a  [#permalink]

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New post 22 Dec 2015, 04:08
Bunuel wrote:
If t is the sum of three consecutive positive integers, is t a multiple of 24?

(1) The smallest of the 3 integers is even.
(2) t is a multiple of 3.


Hi,
t is the sum of three consecutive positive integers,...
only one thing is for sure that the sum will be a multiple of 3, since one number will leave a remainder of 0, next 1 and the third one 2...
lets check the statement..
1) The smallest of the 3 integers is even..
this tells us that the integers are even, odd,even..
therefore the sum will be odd...
and no odd number can be a multiple of 24..
so ans to Q is NO and suff...

2) t i sa multiple of 3..
nothing new.. ie is already known.. insuff

ans A
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3) effects of arithmetic operations : https://gmatclub.com/forum/effects-of-arithmetic-operations-on-fractions-269413.html


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Re: If t is the sum of three consecutive positive integers, is t a  [#permalink]

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New post 22 Dec 2015, 07:59
(1) The smallest of the 3 integers is even.
2,3,4...Suffcient
(2) t is a multiple of 3.
1,2,3 or 2,3,4 ....Insuff.

Ans:A
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Re: If t is the sum of three consecutive positive integers, is t a  [#permalink]

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New post 22 Dec 2015, 23:59
asethi wrote:
(1) The smallest of the 3 integers is even.
2,3,4...Suffcient
(2) t is a multiple of 3.
1,2,3 or 2,3,4 ....Insuff.

Ans:A

Hi,

I do understand that you have read the question wrong " its the sum of three consecutive integers NOT product"

In any case, the answer will be A because of the following logic:

St (1) says " smallest of the 3 integers is even" that means it must be even,odd,even which gives odd as a result and we know that 24 doesnt give odd as a multiple. Hence A is sufficient.
St (2) says, t is a multiple of 3 which doesnt help. Hence Not sufficient.
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Re: If t is the sum of three consecutive positive integers, is t a  [#permalink]

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New post 20 Mar 2017, 15:55
If t is the sum of three consecutive positive integers, is t a multiple of 24?

Let the three integers x, x+1, x+2

t=x + x+1 + x+2=3x + 3= 3 (x+1)

(1) The smallest of the 3 integers is even.

x= even which means = 3 (even +1) = 3 * odd =odd. Therefore, t can't be multiple of 24 as it can't contain any even factor.

Sufficient

(2) t is a multiple of 3.

From our previous work above, we know the it is already multiple of 3 but no info about x.

Let x = 0.........t = 3 *1 =3 is NOT multiple of 24

Let x= 7........ t= 3 * 8=24 is multiple of 24

Insufficient

Answer: A
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Re: If t is the sum of three consecutive positive integers, is t a  [#permalink]

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