Remainder R : GMAT Data Sufficiency (DS)
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# Remainder R

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18 Mar 2011, 01:44
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Question Stats:

25% (00:00) correct 75% (02:32) wrong based on 8 sessions

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any help?
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Re: Remainder R [#permalink]

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18 Mar 2011, 02:23
S1 is sufficient. T=6 and t=13 the answer is 2
S2 is insufficient.
Consider t=1 the answer is 5
Consider t=6 the answer is 2

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Re: Remainder R [#permalink]

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18 Mar 2011, 21:12
t = 7m + 6

In equation, substitute this :

(7m+6)^2 + 35m + 30 + 6

= 49m^2 + 84m + 36 + 35m + 36

= 49m^2 + 119m + 72

So remainder will be 2,

(1) is sufficient.

From (2)

t^2 = 7n + 1

So in equation, substitute this -> 7n + 1 + 5t + 6 = 7n + 7 + 5t

we don't know about t/7.

So (2) is not sufficient.

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Re: Remainder R   [#permalink] 18 Mar 2011, 21:12
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# Remainder R

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